Abstract

In one example, an RF oscillator system includes a laser source configured to emit laser light, a housing, a crystalline microresonator disposed within the housing, and a photonic integrated circuit disposed within the housing, the photonic integrated circuit including an optical waveguide network and configured to generate a clock signal based on the laser light. The RF oscillator system may further include at least one photonic wirebond configured to couple the laser light between the optical waveguide network and the crystalline microresonator via evanescent coupling; laser control circuitry disposed within the housing and configured to lock a frequency of the laser light to a resonance of the microresonator to generate the clock signal; and a direct digital synthesizer disposed within the housing and configured to produce a tunable oscillator signal based on the clock signal.

IPC Classes  ?

• G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
• G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
• G02B 6/42 - Coupling light guides with opto-electronic elements
• H04B 10/508 - Pulse generation, e.g. generation of solitons
• H01S 3/063 - Waveguide lasers, e.g. laser amplifiers

Abstract

A laser seeker system is provided. The laser seeker system includes at least a laser pulse receiver circuitry and a pulse evaluator is provided. The pulse evaluator can be configured to obtain a set of measured pulse repetition intervals associated with laser pulses acquired by the laser pulse receiver circuitry. The pulse evaluator can further categorize a current volatility status indicating a respective category of a set of volatility categories, and based on a volatility index indicating a variance of the set of measured PRIs and a volatility counter indicating a number of the acquired laser pulses. The pulse evaluator can further increase a respective category counter that counts occurrences of the respective volatility category. The pulse evaluator can further categorize the authenticity of the laser seeker target based on the set of category counters.

IPC Classes  ?

• F41G 7/00 - Direction control systems for self-propelled missiles
• F41G 7/22 - Homing guidance systems

Abstract

In one example, an RF oscillator system includes a laser source configured to emit laser light, a housing, a crystalline microresonator disposed within the housing, and a photonic integrated circuit disposed within the housing, the photonic integrated circuit including an optical waveguide network and configured to generate a clock signal based on the laser light. The RF oscillator system may further include at least one photonic wirebond configured to couple the laser light between the optical waveguide network and the crystalline microresonator via evanescent coupling; laser control circuitry disposed within the housing and configured to lock a frequency of the laser light to a resonance of the microresonator to generate the clock signal; and a direct digital synthesizer disposed within the housing and configured to produce a tunable oscillator signal based on the clock signal.

IPC Classes  ?

• H01S 5/00 - Semiconductor lasers
• G02B 6/42 - Coupling light guides with opto-electronic elements
• H01S 5/062 - Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
• H03D 7/12 - Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
• H03K 5/1252 - Suppression or limitation of noise or interference

Abstract

A precipitation scanning aperture RADAR system comprises at least one transmitting satellite (TX) and a plurality of receiving satellites (RXs) flying in a multi-static formation. The TX emits fixed frequency, pseudo-random, non-repeating phase modulated RADAR energy. Range and Doppler information is extracted from reflected signals received by the RXs to form coherent 2D along track/vertical images, which are combined into a 3D reflectivity map using a power-based incoherent modeling algorithm, such as a Gaussian mixture model. Embodiments implement a spotlight mode in which, for each RX, a plurality of the coherent 2D images obtained during successive coherent processing intervals (CPIs) are incoherently combined, and the satellites adjust their orientations between each CPI to compensate for satellite movement. Inter-satellite timing synchronization of 10 ns or better is sufficient for forming the 3D reflectivity map. The range and Doppler information can be extracted by concurrently demodulating at a plurality of reference frequencies.

IPC Classes  ?

• G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques

Goods & Services

Electronic apparatus for projectile guidance systems, namely sensors, processors and software; hardware and software for use in the operation of guided weapons; Seekers for guided projectiles

Abstract

A system for coupling sections of a platform. In an example, the coupler system includes a cylindrical housing to be attached to a first section; a spin member within the housing configured to rotate about a longitudinal platform axis; a groove pattern etched into the spin member; a plunger, within the spin member, configured to move linearly along the longitudinal axis; a first spring configured to cause the linear plunger movement in response to acceleration of the platform; a guide pin attached to the plunger, extending radially outward toward the housing, configured to travel along the groove pattern with plunger movement; a ball coupler mechanism to provide mechanical attachment of the coupler system to a second section; and a second spring configured to rotate the spin member, such that movement of the plunger and rotation of the spinner cause the ball coupler mechanism to disengage from the second section.

IPC Classes  ?

• F42B 15/36 - Means for interconnecting rocket-motor and body sectionMulti-stage connectorsDisconnecting means

Abstract

Techniques are provided for simulating the performance of a radar warning receiver (RWR). A methodology implementing the techniques according to an embodiment includes generating a scan matrix to identify RWR dwells as a function of time. The generation is based on a provided scan schedule associated with a threat. The method also includes simulating dwell detections and dwell no-detects based on a provided probability of intercept (POI) associated with the threat. A dwell detection is indicative of an occurrence of an illumination by the threat in the RWR dwell and a dwell no-detect is indicative of an absence of an illumination by the threat in the dwell. The method further includes processing the dwell detections and dwell no-detects to generate a threat declaration based on a processing algorithm of the RWR associated with the threat. The method further includes generating a report comprising results of the processing.

IPC Classes  ?

• G01S 7/40 - Means for monitoring or calibrating

Abstract

A payload module for a countermeasure dispenser system is provided. The payload module, according to an embodiment, includes four exterior walls and a plurality of interior walls configured to subdivide the payload module into a plurality of square tubes. The exterior walls and the interior walls comprise one or more monolithic and continuous bodies of material which are fabricated using an extrusion process. The payload module further includes four triangular corner structures attached to a front side of the payload module such that each of the exterior walls connects to a pair of the triangular corner structures. The one or more materials may comprise nylon, polyether ether ketone, and aluminum. The thickness of the exterior walls is greater than the thickness of the interior walls for strength and weight reduction.

IPC Classes  ?

• B64D 7/00 - Arrangement of military equipment, e.g. armaments, armament accessories or military shielding, in aircraftAdaptations of armament mountings for aircraft

Abstract

An optical seeker assembly and method, used in a semiautomatic laser seeker system in a precision guided munition, improve detection sensitivity, increase detection speed, and reduce calculation overhead includes at least two linear optical detector arrays, where the detection signals with the maximum summed intensity, from among pairs of adjacent pixel detectors, are selected for each linear optical detector array, and the signal with the maximum summed intensity, from among the selected signals, for pairs of adjacent linear optical detector arrays is selected, and compared to a threshold value that is set to produce a constant false alarm rate, to produce a detection signal that is then confirmed as a confirmed detection through process of correlation with other recent detection signals.

IPC Classes  ?

• F41G 7/22 - Homing guidance systems
• G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
• G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means

Abstract

A bi-directional full-duplex interface or serial communication interface operable to connected to a first device and a second device to decode or encode a signal between the first device and the second device in the first line code or the second line code. The bi-directional full-duplex interface includes a receive path that converts a first data signal output from the first device at a first communication rate to a second line code for the second device where the first communicate rate is slower than the second line code. The bi-directional full-duplex interface also includes a transmit path that converts a second data signal output from the second device at the second communication rate to the first line code for the first device.

IPC Classes  ?

• H04L 5/14 - Two-way operation using the same type of signal, i.e. duplex
• H04L 7/04 - Speed or phase control by synchronisation signals

Abstract

Disclosed is a radio frequency receiver with real-time dynamic gain control that uses a feed-forward structure to enable the short response times that are required by IFF systems. In the radio frequency receiver, a signal that is received by an antenna is split by a splitter, and during processing of one branch of the split by a receiver chain, the other branch is subjected concurrently to power detection, to thereby set the attenuation of a dynamic gain amplifier prior to the processed radio frequency signal arriving at the attenuator, thereby conditioning the radio frequency signal to match the dynamic range of a subsequent analog device, such as an ADC, protecting the ADC and optimizing performance thereof, while eliminating the time that would be required by a feedback-based dynamic gain control system.

IPC Classes  ?

• H04B 1/12 - Neutralising, balancing, or compensation arrangements
• H03G 3/30 - Automatic control in amplifiers having semiconductor devices

Abstract

A universal substrate for a printed circuit board (PCB) package. The universal substrate includes a first end and a second end opposite to the first end, a plurality of conductors located between the first end and the second end, and a nonconductive matrix. The plurality of conductors has a first connection end, a second connection end opposite to the first connection end, and a plurality of conductive pathways defined between the first connection end and the second connection end. The nonconductive matrix surrounds the plurality of conductors and configured to isolate each conductor of the plurality of conductors from one another along an axis that is perpendicular to the plurality of pathways. The universal substrate also includes at least one non-linear section defined between the first connection end and the second connection end.

IPC Classes  ?

• H05K 1/11 - Printed elements for providing electric connections to or between printed circuits

Abstract

Additive manufacturing techniques are described. In one example, a method includes printing, using a printable copper ink, a layer of copper onto a substrate, applying a photonic sintering process to cure the layer of copper to produce a cured layer of copper, repeating, in an alternating manner, the printing and the photonic sintering process to individually print and cure a plurality of additional layers of copper over the cured layer of copper to produce a copper pillar having a selected height, and after forming the copper pillar to the selected height, depositing, onto the substrate, a dielectric material at least partially surrounding the copper pillar.

IPC Classes  ?

• H05K 1/09 - Use of materials for the metallic pattern
• B22F 10/10 - Formation of a green body
• B22F 10/50 - Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
• B33Y 80/00 - Products made by additive manufacturing
• H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
• H05K 3/12 - Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using printing techniques to apply the conductive material

Abstract

A universal substrate for a printed circuit board (PCB) package. The universal substrate includes a first end and a second end opposite to the first end, a plurality of conductors located between the first end and the second end, and a nonconductive matrix. The plurality of conductors has a first connection end, a second connection end opposite to the first connection end, and a plurality of conductive pathways defined between the first connection end and the second connection end. The nonconductive matrix surrounds the plurality of conductors and configured to isolate each conductor of the plurality of conductors from one another along an axis that is perpendicular to the plurality of pathways. The universal substrate also includes at least one non-linear section defined between the first connection end and the second connection end.

IPC Classes  ?

• H05K 1/02 - Printed circuits Details
• H05K 1/14 - Structural association of two or more printed circuits
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components
• H05K 3/36 - Assembling printed circuits with other printed circuits

Abstract

A guided munition and associated method, which may be implemented by a computer program product, is provided. The guided munition may have an annular folded optic (AFO), wherein at least a first portion of the AFO may be, at least partially, on a wing of the guided munition. The AFO may be transversely segmented to enable the AFO to move between a collapsed position and a deployed position. There may be a first segment and a second segment that selectively interface in response to at least one instruction to move the first segment and the second segment closer to each other. There may be an interface plane, wherein the interface lies along the interface plane, that intersects a central axis at a location outside the body of the AFO. This allows for a dual mode seeker with both the SAL and an image sensor located behind a warhead.

IPC Classes  ?

• F42B 15/01 - Arrangements thereon for guidance or control
• F41G 7/22 - Homing guidance systems
• G02B 17/02 - Catoptric systems, e.g. image erecting and reversing system

Abstract

A system and method is provided to characterize optical properties of a medium by determining a scattering rate of light through a medium, wherein determining the scattering rate of light through the medium is accomplished by utilizing polarized light transmitted from an optical source. The system and method performs a function based on the characterized optical properties of the medium, wherein the function is object ranging through the medium. One particular application of the function relates to assisting the landing and descent in altitude of a platform towards a surface in low-to-no visibility scenarios.

IPC Classes  ?

• G01S 7/499 - Details of systems according to groups , , of systems according to group using polarisation effects
• G01S 7/481 - Constructional features, e.g. arrangements of optical elements
• G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging

Abstract

An antenna device includes a substrate, a ground plane located adjacent to the substrate, an antenna assembly located adjacent to the ground plane, and an electronic circuit. The ground plane has a cavity at least partially adjacent to the substrate. The electronic circuit is collocated in the cavity and between the ground plane and the substrate. The antenna device includes at least one channel extending through the ground plane from the antenna assembly to the substrate. At least one feed line extends through the at least one channel from the antenna assembly to the substrate. The antenna device includes a first pad on the substrate, a second pad on the substrate, and a conductive trace electrically coupled to the first pad and the second pad. The at least one feed line is electrically coupled to the first pad and the electronic circuit is electrically coupled to the second pad.

IPC Classes  ?

• H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart
• H01Q 1/48 - Earthing meansEarth screensCounterpoises

Abstract

An antenna device includes a substrate, a ground plane located adjacent to the substrate, an antenna assembly located adjacent to the ground plane, and an electronic circuit. The ground plane has a cavity at least partially adjacent to the substrate. The electronic circuit is collocated in the cavity and between the ground plane and the substrate. The antenna device includes at least one channel extending through the ground plane from the antenna assembly to the substrate. At least one feed line extends through the at least one channel from the antenna assembly to the substrate. The antenna device includes a first pad on the substrate, a second pad on the substrate, and a conductive trace electrically coupled to the first pad and the second pad. The at least one feed line is electrically coupled to the first pad and the electronic circuit is electrically coupled to the second pad.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• B33Y 80/00 - Products made by additive manufacturing
• H01Q 1/48 - Earthing meansEarth screensCounterpoises

Abstract

A node of a first TDMA network, such as a link 16 network, uses a first receiver to participate in the first network, while using a second receiver to detect and report a second TDMA network, which is not synchronized with the first network, by listening for a characteristic message from the second TDMA network. The timing error between the networks can be estimated from the received message timing. Upon detection, the node can join the second network and/or request updated timing information from the second network. In embodiments where timeslot-specific TRANSEC filters are required, the node selects a TRANSEC filter for a timeslot that is further in the future than an estimated timing error bound. The first and second networks can implement the same network protocol and architecture, differing only due to the timing offset between their network timing references, as would be the case for a split network.

IPC Classes  ?

• H04J 3/02 - Time-division multiplex systems Details
• H04B 7/26 - Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
• H04B 7/212 - Time-division multiple access
• H04W 72/0446 - Resources in time domain, e.g. slots or frames

Abstract

A node of a first TDMA network, such as a link 16 network, uses a first receiver to participate in the first network, while using a second receiver to detect and report a second TDMA network, which is not synchronized with the first network, by listening for a characteristic message from the second TDMA network. The timing error between the networks can be estimated from the received message timing. Upon detection, the node can join the second network and/or request updated timing information from the second network. In embodiments where timeslot-specific TRANSEC filters are required, the node selects a TRANSEC filter for a timeslot that is further in the future than an estimated timing error bound. The first and second networks can implement the same network protocol and architecture, differing only due to the timing offset between their network timing references, as would be the case for a split network.

IPC Classes  ?

• H04J 3/06 - Synchronising arrangements

Abstract

Techniques for compressive receiving. An example RF receiver includes a plurality of digital phase shifters configured to apply a phase encoding scheme to a multi-band digital signal to produce a plurality of reference signals and a corresponding plurality of phase-encoded signals, each reference signal and each phase-encoded signal containing frequency information representing a respective sub-band of the multi-band digital signal, summers that respectively sum the plurality of reference signals and the plurality of phase-encoded signals, channelizers that divide the summed reference signal and the summed phase-encoded signal into a plurality of frequency bins, and a detector configured to detect a signal of interest and to perform delta phase measurements using the summed reference signal and the summed phase-encoded signal to estimate an original RF frequency of the detected signal of interest.

IPC Classes  ?

• H04B 1/18 - Input circuits, e.g. for coupling to an antenna or a transmission line
• H04B 1/16 - Circuits

Abstract

A signal acquisition device includes a first stage processing module configured to correlate a first set of radio frequency (RF) signal samples to a plurality of generated tones, identify a candidate RF signal sample among the correlated first set of RF signal samples based on a peak magnitude of the correlated first set of RF signal samples, the candidate RF signal sample having a first correlation magnitude exceeding a first threshold value, and output an interpolated tone based on the candidate RF signal sample; and a second stage processing module configured to correlate a second set of RF signal samples corresponding to the interpolated tone to a plurality of code signals, and to output an output tone having a second correlation magnitude exceeding a second threshold value.

IPC Classes  ?

• G01S 19/24 - Acquisition or tracking of signals transmitted by the system
• G01S 19/31 - Acquisition or tracking of other signals for positioning
• H04B 17/309 - Measuring or estimating channel quality parameters

Abstract

A radiator assembly has at least one dual frequency band antenna assembly (DFBAA). The DFBAA collocates two isolated frequency band antennas into a single volumetric space. A high-band antenna assembly (aperture and feed structure) is within the same or similar low-band antenna structure while improving gain and field-of-view angular coverage for both bands. There may be quad-ridges that define the low band antenna and a circular waveguide antenna that defines the high band antenna.

IPC Classes  ?

• H01Q 5/20 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands

Abstract

Techniques are provided for fabrication of an electronic device. A methodology implementing the techniques according to an embodiment includes forming a plurality of thin film components on a wafer substrate. The method also includes cutting one or more of the thin film components from the wafer substrate and extracting the one or more of the thin film components from the wafer substrate. The method further includes depositing the extracted thin film components onto pads of a printed circuit board (PCB) assembly. The method further includes performing a solder reflow to electrically couple the one or more thin film components onto the pads of the PCB assembly. The thin film component comprises a release layer, solder layers, solder barrier layers, non-wetting solder barrier layers, a passivation layer, and a component function layer. The component function layer may provide a resistive function, a capacitive function, a diode function, or a thermocouple function.

IPC Classes  ?

• H01L 23/498 - Leads on insulating substrates
• H01L 21/60 - Attaching leads or other conductive members, to be used for carrying current to or from the device in operation

Abstract

Techniques are provided for fabrication of an electronic device. A methodology implementing the techniques according to an embodiment includes forming a plurality of thin film components on a wafer substrate. The method also includes cutting one or more of the thin film components from the wafer substrate and extracting the one or more of the thin film components from the wafer substrate. The method further includes depositing the extracted thin film components onto pads of a printed circuit board (PCB) assembly. The method further includes performing a solder reflow to electrically couple the one or more thin film components onto the pads of the PCB assembly. The thin film component comprises a release layer, solder layers, solder barrier layers, non-wetting solder barrier layers, a passivation layer, and a component function layer. The component function layer may provide a resistive function, a capacitive function, a diode function, or a thermocouple function.

IPC Classes  ?

• H01L 23/00 - Details of semiconductor or other solid state devices

Goods & Services

Integrated energy storage and electric power management systems comprised primarily of aircraft batteries, electric power converters, power distribution units, battery management systems, battery health monitoring systems, electronic control units, and embedded computer hardware for monitoring, controlling, conditioning, converting, storing, and distributing electrical power in aircraft and other aerospace vehicles; Aircraft batteries; Electric power conversion apparatus for aircraft and aerospace vehicles; Battery management systems comprised of electronic controllers for aircraft and aerospace vehicles; Electronic control systems comprised of computer hardware for managing electrical power systems in aircraft and aerospace vehicles.

Abstract

A projectile having a body that includes a nose, a tail opposite to the nose, a chamber defined between the tail and the nose, and a longitudinal axis defined between the nose and the tail. The projectile also includes a payload stored in the chamber of the body, and a propulsion system equipped with the body. The projectile also includes a fin assembly operably engaged with the body between the nose and the tail and is positioned outside of the chamber, wherein a fin of the fin assembly is moveable between a stowed position and a deployed position. In the stowed position, the fin is stowed completely between the nose and the tail. In the deployed position, a portion of the fin extends away from the nose or from the tail.

IPC Classes  ?

• F42B 10/14 - Stabilising arrangements using fins spread or deployed after launch, e.g. after leaving the barrel
• B64C 5/06 - Fins
• B64D 1/00 - Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight
• B64U 70/50 - Launching from storage containers, e.g. from submarine missile tubes

Abstract

In an example, a sensor platform includes at least one sensor configured to acquire sensor data about an environment in which the sensor platform is located, a wireless communication interface, and a computing platform. The computing platform can be configured to control the sensor platform to acquire first sensor data using the at least one sensor, acquire second sensor data, via the wireless communication interface, from at least one other sensor platform, and display, via a user interface, a fused sensor view that includes the first sensor data and includes or excludes the second sensor data based on a level of trust assigned to the at least one other sensor platform and a trust setting of the sensor platform.

IPC Classes  ?

• H04W 12/03 - Protecting confidentiality, e.g. by encryption
• G06F 21/60 - Protecting data
• H04L 9/00 - Arrangements for secret or secure communicationsNetwork security protocols
• H04W 24/04 - Arrangements for maintaining operational condition
• H04W 84/18 - Self-organising networks, e.g. ad hoc networks or sensor networks

Abstract

In one general embodiment, a process includes a repeated sequence of growing a first layer having a first type of electrically active dopant and growing a second layer having a second type of electrically active dopant, where the first type of electrically active dopant of the first layer is one of either a P-type or an N-type and the second type of electrically active dopant of the second layer is the other one of either the P-type or N-type.

IPC Classes  ?

• H10D 8/25 - Zener diodes
• H10D 8/01 - Manufacture or treatment

Abstract

A suppression kit of a countermeasure system and methods of use thereof. The suppression kit includes a breaching expendable that is adapted to be stored inside of a magazine of the countermeasure system. The suppression kit also includes a cover that operably engages with the breaching expendable. The cover is configured to one of suppress electromagnetic signals from penetrating into a dispenser of the countermeasure system, prevent optical or visual view of contents within the countermeasure system, and suppress environmental impacts from entering into the countermeasure system. The breaching expendable is configured to eject the cover from the dispenser prior to ejection of at least one countermeasure expendable of a set of countermeasure expendables.

IPC Classes  ?

• F42B 12/70 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materialsProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for producing chemical or physical reactionProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for signalling for dispensing discrete solid bodies for dispensing radar chaff or infrared material
• B64D 1/06 - Bomb releasingBomb doors
• B64D 7/00 - Arrangement of military equipment, e.g. armaments, armament accessories or military shielding, in aircraftAdaptations of armament mountings for aircraft
• F41H 11/02 - Anti-aircraft or anti-guided missile defence installations or systems

Abstract

A guidance system for a guided munition has an inertial measurement unit (IMU) or another type of first sensor on the guided munition, electro-optical/infrared (EO/IR) sensor on the guided munition, and a guidance computer assembly (GCA) having a Programmable Real-Time Unit Industrial Communication SubSystem (PRU-ICSS), wherein the PRU-ICSS is in operative communication with the IMU or another type of first sensor and the EO/IR. The PRU-ICSS has a first Programmable Real-Time Unit (PRU), wherein the first PRU is programmed to receive and process input data from the IMU or another type of first sensor on the guided munition, and the PRU-ICSS has a second PRU, wherein the second PRU is programmed to receive and process input data from the EO/IR sensor on the guided munition.

IPC Classes  ?

• F42B 15/01 - Arrangements thereon for guidance or control

Abstract

Techniques are provided for an error resistant radiation hardened memory system based on spreading of data bits among multiple random access memories (RAMs). A memory system implementing the techniques according to an embodiment includes a first plurality of RAMs configured to store data bits written to the memory system, the data bits distributed over the first plurality of RAMs. The system also includes an error correction coding (ECC) circuit configured to generate ECC codes, each of the codes associated with a unique group of the data bits. The system further includes a second plurality of RAMs configured to store bits of the ECC codes such that the bits of each ECC code are distributed over the second plurality of RAMs. The system further includes a reporting circuit configured to report a single bit error correction or a double bit error detection, resulting from a read operation on the memory system.

IPC Classes  ?

• G06F 11/10 - Adding special bits or symbols to the coded information, e.g. parity check, casting out nines or elevens

Abstract

A direct digital synthesis (DDS) device includes a first digital to analog converter (DAC) and a second DAC, wherein the first and second DACs are configured to respectively process first and second samples of a digital amplitude signal. The DDS device also includes a switch configured to receive first and second DAC output signals from the first and second DACs, respectively, and selectively switch among at least the first DAC output signal and the second DAC output signal to generate a combined signal. The DDS device also includes a signal mixer configured to receive the combined signal and a mixer clock signal, wherein the signal mixer is a multi-mode mixer further configured to operate in (i) a pass-through mode where the combined signal is provided as a mixed signal, and (ii) a mixing mode where the combined signal is mixed with the mixer clock signal, to generate the mixed signal.

IPC Classes  ?

• G06F 1/02 - Digital function generators
• G06F 1/06 - Clock generators producing several clock signals
• G06F 1/08 - Clock generators with changeable or programmable clock frequency
• G06F 1/12 - Synchronisation of different clock signals
• G06F 1/03 - Digital function generators working, at least partly, by table look-up

Abstract

A method of establishing a contention resolution schedule in a transmission system. The method comprises steps of: providing a computer program product with a set of network devices of the transmission system, the transmission system comprises at least: an initiator having a first processor, and a responder having a second processor that is operatively in communication with the initiator; wherein when the computer program product is executed, the processors are caused to: instruct the initiator to output an initiation message including at least a set of initiator transmission opportunities and to output a contention parameter message, instruct the responder to accept a set of responder response opportunities and to output a set of responder transmission opportunities, instruct the initiator to select a set of initiator response opportunities and accept a set of initiator response opportunities, and establish the contention resolution schedule in the transmission system.

IPC Classes  ?

• H04W 74/0816 - Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance

Abstract

A system includes a first enclosure, a first input transmission line within the first enclosure, a first output transmission line within the first enclosure, and first one or more die within the first enclosure and laterally between the first input and first output transmission lines. The system further includes a second enclosure including conductive material, a second input transmission line within the second enclosure, a second output transmission line within the second enclosure, and second one or more die within the second enclosure and laterally between the second input and second output transmission lines. Dimensions of the first enclosure is substantially same as (e.g., within 2%) that of the second enclosure. A length of the first input transmission line differs from a length of the second input transmission line by at least 5%, the lengths being measured in a direction parallel to the lengths of the first and second enclosures.

IPC Classes  ?

• H01L 23/66 - High-frequency adaptations
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
• H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles

Abstract

A transmission system that includes an initiator, a responder, and a computer program product. The initiator includes a first processor and a first computer readable medium that is accessible by the first processor. The responder includes a second processor and a second computer readable medium accessible by the second processor, wherein the responder is operatively in communication with the initiator. The computer program product is stored on the first computer readable medium and on the second computer readable medium. When the computer program product is executed by the first processor of the initiator and the second processor of the responder, the computer program product establishes a contention free schedule between the initiator and the responder to communicate at predetermined time periods.

IPC Classes  ?

• H04W 74/0816 - Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance

Abstract

A method of scheduling at least one set of communication slots based on selected opportunities. The method comprises steps of providing a computer program product with a set of network devices of a transmission system, wherein each network device of the set of network devices of the transmission system comprises: a processor; and a computer readable medium that is accessible by the processor and stores the computer program product. When the product is executed by each processor of the transmission system, each processor is caused to: input a set of contention parameters into the computer program product, select whether the at least one set of communication slots relates to a set of transmission opportunities or a set of response opportunities, compute a number of communication slots that defines the at least one set of communication slots, schedule the at least one set of communication slots based on the selected opportunities.

IPC Classes  ?

• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/1263 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows

Abstract

A countermeasure includes a cartridge case. There is an impulse cartridge (IC) cup on the cartridge case. There is a deployable payload within the cartridge case, where the deployable payload is adapted to be deployed and expelled from the cartridge case. A battery is on the deployable payload, wherein the battery is enabled to power a component on the deployable payload in response to an impulse cartridge being connected with the IC cup and the battery is disabled in response to the impulse cartridge being disconnected from the IC cup.

IPC Classes  ?

• F42B 5/15 - Cartridges, i.e. cases with propellant charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A direct digital synthesis (DDS) device includes a first digital to analog converter (DAC) and a second DAC, wherein the first and second DACs are configured to respectively process first and second samples of a digital amplitude signal. The DDS device also includes a switch configured to receive first and second DAC output signals from the first and second DACs, respectively, and selectively switch among at least the first DAC output signal and the second DAC output signal to generate a combined signal. The DDS device also includes a signal mixer configured to receive the combined signal and a mixer clock signal, wherein the signal mixer is a multi-mode mixer further configured to operate in (i) a pass-through mode where the combined signal is provided as a mixed signal, and (ii) a mixing mode where the combined signal is mixed with the mixer clock signal, to generate the mixed signal.

IPC Classes  ?

• H03M 1/74 - Simultaneous conversion
• H03M 1/66 - Digital/analogue converters

Abstract

An antenna assembly includes a first dielectric material, a ground plane above the first dielectric material, and two or more patch antennas above the ground plane. In an example, the ground plane has a first aperture slot, and a second aperture slot that is non-intersecting with the first aperture slot. The antenna assembly further includes a second dielectric material separating the two or more patch antennas from the ground plane. In an example, the first dielectric material comprises a printed circuit board (PCB). In some examples, the ground plane and the two or more patch antennas are manufactured using additive manufacturing techniques (such as three-dimensional printing techniques), and in some such examples, the second dielectric material includes dielectric foam. For example, the dielectric foam supports the two or more patch antennas above the ground plane.

IPC Classes  ?

• H01Q 9/04 - Resonant antennas
• H01Q 1/48 - Earthing meansEarth screensCounterpoises
• H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart

Abstract

An antenna assembly includes a flexible substrate configured to be extended from a retracted configuration to a deployed configuration and retracted from the deployed configuration to the retracted configuration. The antenna assembly further includes a ground plane element disposed on the substrate and a plurality of antenna elements disposed on the substrate. In the deployed configuration, the antenna assembly extends vertically away from a hull of an underwater vehicle. In the retracted configuration, the antenna assembly is retracted into the hull and/or conforms to a shape of the hull. The substrate can be attached to the underwater vehicle.

IPC Classes  ?

• H01Q 1/34 - Adaptation for use in or on ships, submarines, buoys or torpedoes
• H01Q 1/08 - Means for collapsing antennas or parts thereof
• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• H01Q 1/48 - Earthing meansEarth screensCounterpoises

Goods & Services

communication and electronic warfare components and systems comprising electronic warfare suite controllers, direction finding systems, and geolocation systems for mobile communication devices that send and receive signals; signal intelligence system, including computer hardware, firmware, and software that receives, analyzes, and stores RF signals allowing for detection, spectrum scanning and monitoring, generation and reporting of signal information; computer software for signal direction finding, signal intelligence applications for monitoring and intercepting signals, spectrum scanning and monitoring, signal classification and decryption, software defined radio reception, interference localization, geolocation, remote sensor control, data visualization, and intelligence information gathering

Abstract

A reusable battery-operated electromagnetic pulse (EMP) generator system comprising a pyroelectric element that accumulates high-voltage charge, immersed in a dielectric bath. A heating element heats the dielectric bath and the pyroelectric element, while a temperature sensor monitors their temperatures. The components are housed within a thermal chamber that provides insulation. A switched pulse actuator controls the rapid discharge of the accumulated charge from the pyroelectric element. The system includes a pulse shaping subsystem, a power supply unit, and a broadband radiating element such as an ultrawideband antenna for emitting the EMP. The pyroelectric element is heated and cooled to control accumulation of high voltage charge, which is discharged as an electrical pulse that is shaped and radiated as EMP.

IPC Classes  ?

• H04K 3/00 - Jamming of communicationCounter-measures

Abstract

A signal acquisition device includes a signal channelizer module and a signal processing module. The signal channelizer module is configured to channelize an incoming signal from a moving platform into a first plurality of channels across a first range of frequencies to produce a first channelized signal, to channelize the first channelized signal into a second plurality of channels across a second range of frequencies to produce a second channelized signal, and to store the second channelized signal into a memory. The signal processing module is configured to retrieve the second channelized signal from the memory and search the second channelized signal for a signal of interest. The search may exclude channels tagged to be excised during the storing operation.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes
• H04B 1/713 - Spread spectrum techniques using frequency hopping
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A signal acquisition device includes a signal channelizer module and a signal processing module. The signal channelizer module is configured to channelize an incoming signal from a moving platform into a first plurality of channels across a first range of frequencies to produce a first channelized signal, to channelize the first channelized signal into a second plurality of channels across a second range of frequencies to produce a second channelized signal, and to store the second channelized signal into a memory. The signal processing module is configured to retrieve the second channelized signal from the memory and search the second channelized signal for a signal of interest.

IPC Classes  ?

• H04B 1/7156 - Arrangements for sequence synchronisation
• H04B 1/715 - Interference-related aspects

Abstract

Techniques are provided for non-linear filtering of a signal for improved pulse detection and pulse width discrimination. A system implementing the techniques according to an embodiment includes a first linear filter configured to filter an in-phase component of a received signal to a downsample bandwidth and a second linear filter configured to filter a quadrature phase component of the received signal to the downsample bandwidth. The system also includes a magnitude calculation circuit coupled to outputs of the first linear filter and the second linear filter and configured to generate a magnitude signal based on the filtered in-phase component and the filtered quadrature phase component of the received signal. The system further includes a median filter processor coupled to an output of the magnitude calculation circuit and configured to apply a median filter to the magnitude signal to generate a filtered signal having reduced noise while maintaining sharp edge transitions.

IPC Classes  ?

• G01R 29/027 - Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
• H03H 17/02 - Frequency-selective networks

Abstract

Techniques are disclosed for self-interference signal cancellation. A spectral density measurement system includes a self-interference cancellation circuit configured to generate a cancellation signal based on a first radio signal and a second radio signal, the first radio signal transmitted and the second radio signal received simultaneously. A first signal channel is configured to sample the first radio signal into a sampled first radio signal, and a second signal channel is configured to sample the second radio signal into a sampled second radio signal. The system further includes a cross power spectral density measurement module configured to generate a control signal for controlling the cancellation circuit based on the sampled first radio signal and the sampled second radio signal.

IPC Classes  ?

• H04B 1/10 - Means associated with receiver for limiting or suppressing noise or interference
• H04B 17/10 - MonitoringTesting of transmitters
• H04B 17/20 - MonitoringTesting of receivers
• H04B 17/345 - Interference values

Abstract

Techniques are provided for detection and acquisition of signals. A methodology implementing the techniques according to an embodiment includes correlating an input signal with a code sequence at a first plurality of frequency offsets and generating a first bit vector representing locations of correlation detection peaks for each of the first plurality of frequency offsets; correlating the input signal with the code sequence at a second plurality of frequency offsets and generating a second bit vector representing locations of correlation detection peaks for each of the second plurality of frequency offsets; and generating a combined bit vector and accumulating the combined bit vectors over time. The method also includes identifying two consecutive correlation detection peaks in the accumulated combined bit vectors that are separated by a number of bit locations that correspond to a selected range of Doppler offsets; and generating a signal acquisition detection in response to the identification.

IPC Classes  ?

• H04B 1/7163 - Spread spectrum techniques using impulse radio

Abstract

Techniques for reducing harmonics of a local oscillator (LO) signal. A methodology implementing the techniques according to an embodiment includes splitting an LO signal into first and second LO signals using a passive splitting circuit. The method also includes generating one of either a first enable signal or a second enable signal based on the LO signal frequency. The method further includes amplifying and filtering the first LO signal to generate a first band LO signal, in response to the first enable signal, and amplifying and filtering the second LO signal to generate a second band LO signal, in response to the second enable signal. The method further includes combining, using a passive Wilkinson combiner, output paths of the first band processing circuit and the second band processing circuit to provide either the first band LO signal or the second band LO signal as a reduced harmonic LO signal.

IPC Classes  ?

• H03B 1/04 - Reducing undesired oscillations, e.g. harmonics

Abstract

Techniques are provided for detection and acquisition of signals. A methodology implementing the techniques according to an embodiment includes correlating an input signal with a code sequence at a first plurality of frequency offsets and generating a first bit vector representing locations of correlation detection peaks for each of the first plurality of frequency offsets; correlating the input signal with the code sequence at a second plurality of frequency offsets and generating a second bit vector representing locations of correlation detection peaks for each of the second plurality of frequency offsets; and generating a combined bit vector and accumulating the combined bit vectors over time. The method also includes identifying two consecutive correlation detection peaks in the accumulated combined bit vectors that are separated by a number of bit locations that correspond to a selected range of Doppler offsets; and generating a signal acquisition detection in response to the identification.

IPC Classes  ?

• H04B 1/707 - Spread spectrum techniques using direct sequence modulation
• H04B 1/69 - Spread spectrum techniques
• H04J 13/00 - Code division multiplex systems
• H04B 15/00 - Suppression or limitation of noise or interference
• G01S 7/292 - Extracting wanted echo-signals
• H04L 27/00 - Modulated-carrier systems
• H04L 27/26 - Systems using multi-frequency codes
• H04L 7/04 - Speed or phase control by synchronisation signals
• H04B 1/7103 - Interference-related aspects the interference being multiple access interference

Abstract

An interposer that enables implementation of a flip-chip die in a wirebonded chip-and-wire circuit assembly includes an insulating substrate having a solder bump pad array on its upper surface that is compatible with the solder bump array of a flip-chip die. Wirebond pads provided along upper edges of the substrate are interconnected to at least some of the solder bump pads. Bonding the interposer to the circuit assembly housing floor, or through an opening to an underlying motherboard, places the wirebond pads proximate attachment points of adjacent wirebond dies, enabling wirebonding therebetween. Attachment pads on the interposer lower surface, in combination with interconnecting traces and vias, can enable connection directly through the housing opening to the underlying motherboard. Support components can be included within an edge cavity created beneath an overhang of a multi-layer substrate. A heat absorbing plate can be attached to the top of the flip-chip die.

IPC Classes  ?

• H01L 23/498 - Leads on insulating substrates
• H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
• H01L 23/12 - Mountings, e.g. non-detachable insulating substrates
• H01L 23/367 - Cooling facilitated by shape of device
• H01L 23/495 - Lead-frames
• H05K 1/18 - Printed circuits structurally associated with non-printed electric components

Abstract

Techniques are disclosed for self-interference signal cancellation. A self-interference cancellation method includes measuring an error between an output of a hardware cancellation circuit and an output of a software model of the hardware cancellation circuit. The method further includes estimating an amplitude error, a phase error, and a delay error based on the measured error and the output of the hardware cancellation circuit, and locating a largest frequency domain error peak in the measured error. The method further includes applying an all-pass filter to the estimated and measured signals at the peak error frequency to produce a filtered estimated signal and a filtered measured signal and optimizing the filtered estimated signal and the filtered measured signal to obtain an optimized canceller setting. The optimized canceller setting is provided to the hardware cancellation circuit.

IPC Classes  ?

• H04B 1/525 - Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
• H04B 1/10 - Means associated with receiver for limiting or suppressing noise or interference
• H04L 5/12 - Channels characterised by the type of signal the signals being represented by different phase modulations of a single carrier

Abstract

A method of scheduling commands for execution in a computing device includes receiving command data, where the command data includes a command to be executed on a processor and an execution start time for executing the command; storing the command data in a data storage; reading, responsive to determining that the execution start time is within an execution window, the command data from the data storage; and causing the command data to be output to a processor for execution. The method can include assigning a label to the command data, where the label corresponds to an address in the data storage, and where the command data is stored at, and read from, the address in the data storage. The method can include storing, responsive to determining that the execution start time is not within the execution window, the label, and the execution start time in a fast scheduler memory.

IPC Classes  ?

• C21D 9/04 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for rails
• C21D 1/20 - Isothermal quenching, e.g. bainitic hardening
• C21D 1/63 - Quenching devices for bath quenching
• C21D 6/00 - Heat treatment of ferrous alloys
• C22C 38/00 - Ferrous alloys, e.g. steel alloys
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/38 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese

Abstract

An addressably switchable interconnecting device, comprising an AXI stream switch having a plurality of input/output ports, configured so as to receive, into a first input/output port, data and control signals as well as a switch destination output port signal, to connect the first input/output port to a second input/output port depending on the switch destination output port signal, so as to pass the data and control signals from the first input/output port through the stream switch to the second input/output port, and further comprising a switch destination output port signal generating device for generating the switch destination output port signal from the data signal. Also a communication system and a communication protocol using the addressably switchable interconnecting device.

IPC Classes  ?

• G06F 13/40 - Bus structure

Abstract

A system and method of detecting a plurality of emitters in a single snapshot. The system includes an antenna that is operable to emit a beamwidth to intercept output signals emitted by a plurality of emitters in a search area. The system also includes a processor that is operable with the antenna for receiving the output signals. The system also includes at least one non-transitory machine readable medium that is operable to be accessed by the processor. The system also includes a computer program product that has instructions stored on the at least one non-transitory machine readable medium, wherein when the computer program product is executed by the processor, a process is carried out by the processor for detecting the plurality of emitters inside of the beamwidth of the direction finding antenna in a single snapshot.

IPC Classes  ?

• G01S 3/06 - Means for increasing effective directivity, e.g. by combining signals having differently-oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna
• G01S 3/02 - Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
• G01S 3/20 - Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic derived by sampling signal received by an antenna system having periodically-varied orientation of directivity characteristic

Abstract

A communications interconnect between the countermeasure controller of a countermeasure system and the dispenser containing the countermeasure payloads therein. Additionally, the present disclosure provides a power connection between the countermeasure controller and the countermeasure dispenser to deliver power to the countermeasure payloads, including smart payloads, utilizing existing vehicle wiring harnesses and wiring kits.

IPC Classes  ?

• F42B 5/15 - Cartridges, i.e. cases with propellant charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material
• F41A 19/68 - Electric firing mechanisms for multibarrel guns

Abstract

A method of signifying an assurance status of an unassured user. The method includes steps of: installing a computer program product for assurance on a computer readable medium of an unassured user that is executable by a processor of the unassured user, and installing the computer program product for assurance on a computer readable medium of an assured user that is executable by a processor of the assured user. When executed, processor of the assured user is caused to: time tag an unassured datalink message received from the unassured user by an assured receiver of the assured user; send an assured location measurement and an assured datalink message to the unassured user from an assured transceiver of the assured user; compare an unassured location measurement received from the unassured user and the assured location measurement based on an assurance threshold; and signify an assurance status of the unassured user.

IPC Classes  ?

• G01S 19/48 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
• G01S 19/51 - Relative positioning
• G01S 19/52 - Determining velocity

Abstract

A hand-held tool enables accurate, micro-radian rotation of a control element. The tool includes an adjustment shaft extending distally from an adjusting element, and a reducer within a housing that mechanically couples the adjustment shaft to a distal tool shaft. Rotating the tool as a whole directly rotates the tool shaft, while rotating only the adjustment shaft causes the reducer to apply a smaller rotation to the tool shaft according to a reduction factor that can be between 16 and 1024. The adjusting element can be a manually rotated knob, or a motor, such as a stepper motor, actuated by a switch, such as a momentary contact, rocker, or pushbutton switch. The reducer can include one or more planetary gear stages, and/or one or more strain wave gear stages. The tool can have a length not more than 5 inches and a diameter not more than 0.6 inches.

IPC Classes  ?

• B25B 17/00 - Hand-driven gear-operated wrenches or screwdrivers
• B25B 21/00 - Portable power-driven screw or nut setting or loosening toolsAttachments for drilling apparatus serving the same purpose

Abstract

A monobit analog-digital converter (ADC) system and method are disclosed, the system comprising a front-end signal conditioning system equipped with a programmable attenuator and amplifier for processing analog signals, where the attenuator, which may include a cascade of programmable attenuator cells, is controlled by an attenuation control signal to adjust signal attenuation to cause a signal-to-noise ratio (SNR) in the negative domain, after which an amplifier amplifies the attenuated signal with the suitable SNR, where the amplified signal is then converted to a monobit signal by a monobit ADC, thereby achieving an ADC system that enables conditioning and digitizing of RF signals over a wide range of input signal powers with control over the output spectrum signal power and harmonics to achieve low-power real-time general-purpose broadband blocker detection for adaptive radios and for interference detection, main beam radar signal detection, and instantaneous frequency measurement, among other fields requiring general-purpose blocker identification with low size, weight, power, and cost (SWaP-C).

IPC Classes  ?

• H03M 1/12 - Analogue/digital converters
• H03M 1/08 - Continuously compensating for, or preventing, undesired influence of physical parameters of noise

Abstract

A guided vehicle that includes a propulsion system, a housing that is operably engaged with the propulsion system, a guidance device defining a viewing window and being operably engaged with the housing and is disposed inside of the housing, and a cover that is rotatably engaged with the housing and is configurable between a pre-flight configuration and a flight configuration. When the cover is provided in the pre-flight configuration, the viewing window is completely shielded by the cover, and when the cover is provided in the flight configuration, the viewing window is free from being shielded by the cover. When the propulsion system, the housing, and the guidance device collectively rotate in a first direction in flight, the covers rotates about the housing in a second direction opposite to the first direction wherein the cover transitions from the pre-flight configuration to the flight configuration.

IPC Classes  ?

• F42B 10/46 - Streamlined nose conesWindshieldsRadomes
• F42B 15/08 - Self-propelled projectiles or missiles, e.g. rocketsGuided missiles for carrying measuring instruments
• G01D 11/26 - WindowsCover glassesSealings therefor

Abstract

A small form factor aircraft comprising: a body comprising an internal volume; at least one motor disposed within the internal volume; at least one lead screw driven by the at least one motor; at least one collar disposed at least partially within the internal volume of the body; at least one pair of wings, each wing being rotatably attached to the collar adjacent a forward or rear edge; at least one coupler, each coupler being rotatably coupled to a pair of adjacent wings, the coupler comprising a threaded, central section configured to engage with the at least one lead screw such that rotation of the at least one lead screw results in axial translation of the at least one coupler within and relative to the body; and a controller configured to control the at least one motor.

IPC Classes  ?

• B64C 3/40 - Varying angle of sweep
• F42B 10/14 - Stabilising arrangements using fins spread or deployed after launch, e.g. after leaving the barrel

Abstract

An air vehicle assembly initialization and ejection system includes a canister configured to contain an air vehicle assembly, where the air vehicle assembly includes an onboard electronic system and at least one squib for ejecting the air vehicle assembly from the canister. The system further includes a magazine having a canister position configured to contain the canister. The system further includes a first signal path providing electrical communication of a first control signal between the canister position and the canister, the first control signal for causing the onboard electronic system to power up, and a second signal path providing electrical communication of a second control signal between the canister position and the canister, the second control signal for causing the at least one squib to detonate.

IPC Classes  ?

• B64F 1/04 - Ground or aircraft-carrier-deck installations for launching aircraft
• B64U 70/50 - Launching from storage containers, e.g. from submarine missile tubes
• F41F 1/00 - Launching apparatus for projecting projectiles or missiles from barrels, e.g. cannonsHarpoon guns

Abstract

A signal acquisition device includes an acquisition processor configured in a first modality, to correlate a set of RF signal samples across a plurality of time offset windows, wherein there are n streams and each of the n streams has a same frequency offset and a different time offset, and in a second modality, to correlate the set of RF signal samples across a plurality of frequency offset windows, wherein there are n streams and each of the n streams has a same time offset and a different frequency offset.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes

Abstract

Techniques for adaptive signal processing. A methodology implementing the techniques according to an example includes converting T blocks of buffered time domain signals received from C channels of an antenna array to T blocks of frequency domain signals, wherein each frequency domain signal comprises N frequency domain bins. The method also includes calculating N covariance matrices based on the T blocks of frequency domain signals for each of the N bins and generating M combined covariance matrices by combining groups of covariance matrices from the N covariance matrices corresponding to a number of adjacent frequency domain bins. The method further includes generating M reduced covariance matrices by extracting a portion from each of the M combined covariance matrices, the portion corresponding to Z of the T blocks. The method further includes calculating weights based on the M reduced covariance matrices to control the antenna array.

IPC Classes  ?

• H01Q 21/00 - Antenna arrays or systems
• G06F 17/14 - Fourier, Walsh or analogous domain transformations
• G06F 17/15 - Correlation function computation
• G06F 17/16 - Matrix or vector computation

Abstract

Techniques for adaptive signal processing. A methodology implementing the techniques according to an example includes converting T blocks of buffered time domain signals received from C channels of an antenna array to T blocks of frequency domain signals, wherein each frequency domain signal comprises N frequency domain bins. The method also includes calculating N covariance matrices based on the T blocks of frequency domain signals for each of the N bins and generating M combined covariance matrices by combining groups of covariance matrices from the N covariance matrices corresponding to a number of adjacent frequency domain bins. The method further includes generating M reduced covariance matrices by extracting a portion from each of the M combined covariance matrices, the portion corresponding to Z of the T blocks. The method further includes calculating weights based on the M reduced covariance matrices to control the antenna array.

IPC Classes  ?

• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

An apparatus for non-contacting measurement of the temperatures of rotatable elements, such as prism elements of a Risley prism assembly, includes IR emissive patches applied to radially outward facing surfaces of the rotatable elements, reflective surfaces configured to axially reflect black body IR radiation emitted by the patches, IR sensors located behind the rotatable elements and configured to sense the reflected black body radiation, and a controller configured to receive data from the IR sensors and determine therefrom the temperatures of the rotatable elements. In embodiments, none of the IR sensors extends radially beyond a housing of the rotatable elements, and in some embodiments the IR sensors do not extend radially beyond a diameter of a largest of the rotatable elements. The apparatus can further include patches oriented axially rearward and associated IR sensors.

IPC Classes  ?

• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
• G01J 5/02 - Constructional details

Abstract

Techniques for spoofer protection for GNSS receivers. An example methodology includes receiving one or more characteristics of a detected spoofer signal provided by a GNSS spoofer characterization system. The spoofer signal is transmitted by a GNSS spoofer. The one or more characteristics of the detected spoofer signal may include, for instance, one or more of a direction to the GNSS spoofer, a range to the spoofer, a location of the spoofer, and a code type of the detected spoofer signal. The methodology continues with generating parameters for a simulated GNSS signal that is configured to block the GNSS spoofer and transmitting the simulated GNSS signal in the direction of the GNSS spoofer. The parameters can be generated based on the provided one or more characteristics of the detected spoofer signal.

IPC Classes  ?

• G01S 7/36 - Means for anti-jamming
• G01S 19/01 - Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
• G01S 19/03 - Cooperating elementsInteraction or communication between different cooperating elements or between cooperating elements and receivers
• G01S 19/21 - Interference related issues

Abstract

A transparent horizontal gradient freeze (HGF) furnace enables determining a crystallizing growth rate of an ingot by optically monitoring the rate at which a solid/liquid interface traverses across a charge of melted precursor material. The crystallization can be recorded for subsequent analysis, or a machine vision system can monitor and report the solid/liquid traversing rate in near real time, thereby enabling automated regulation of the growth rate to ensure uniform growth. Embodiments implement the disclosed furnace to produce crystalline or polycrystalline indium antimonide mixed with 1.8 wt % nickel antimonide (InSb:NiSb) at a growth rate specified according to required InSb:NiSb properties and a predetermined relationship between the growth rate and the properties of the NiSb needles formed in the ingot. Growth rates can be between 0.02 and 0.08 cm/hr for substantially single crystal ingots, and between 0.5 and 1.5 cm/hr for polycrystalline ingots. The InSb:NiSb can be doped with tellurium.

IPC Classes  ?

• C30B 13/28 - Controlling or regulating
• C30B 13/10 - Single-crystal growth by zone-meltingRefining by zone-melting adding crystallising materials or reactants forming it in situ to the molten zone with addition of doping materials
• C30B 13/14 - Crucibles or vessels
• C30B 13/16 - Heating of the molten zone
• C30B 29/40 - AIIIBV compounds

Abstract

A communications interconnect between the countermeasure controller of a countermeasure system and the dispenser containing the countermeasure payloads therein. Additionally, the present disclosure provides a power connection between the countermeasure controller and the countermeasure dispenser to deliver power to the countermeasure payloads, including smart payloads, utilizing existing vehicle wiring harnesses and wiring kits.

IPC Classes  ?

• F41A 19/68 - Electric firing mechanisms for multibarrel guns
• B64D 1/04 - Dropping, ejecting, or releasing articles the articles being explosive, e.g. bombs
• F41A 19/59 - Electromechanical firing mechanisms, i.e. the mechanical striker element being propelled or released by electric means

Abstract

Various systems and methods for leveraging legacy countermeasure dispensing systems (CMDSs). The legacy CMDSs are leveraged through the expansion of breechplates and magazines in a CMDS by expanding the amount of expendables carried by a CMDS while still maintaining the legacy sequencer and dispenser in a legacy military platform, such as an aircraft. In addition, various circuitry systems are included in a circuit card of the breechplate for duplicating and/or expanding the firing lines provided in a legacy CMDS.

IPC Classes  ?

• F41A 19/68 - Electric firing mechanisms for multibarrel guns
• B64D 1/02 - Dropping, ejecting, or releasing articles
• F41A 19/70 - Electric firing pinsMountings therefor
• F41F 7/00 - Launching-apparatus for projecting missiles or projectiles otherwise than from barrels
• F42B 5/15 - Cartridges, i.e. cases with propellant charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material

Abstract

A guided vehicle that includes a body, a propulsion system operably engaged inside of the body, a housing operably engaged with the body and encasing a guidance device inside of the housing, a viewing window of the guidance device, and a cover moveably engaged with the housing, wherein the cover is moveable between a pre-flight configuration and a flight configuration. In the pre-flight configuration, the cover covers the viewing window. In the flight configuration, the cover is configured to expose the viewing window in the flight configuration in response to an impulse of acceleration generated by a launch of the guided vehicle.

IPC Classes  ?

• F42B 10/46 - Streamlined nose conesWindshieldsRadomes
• F41G 7/22 - Homing guidance systems
• F42B 10/18 - Stabilising arrangements using fins spread or deployed after launch, e.g. after leaving the barrel using a longitudinally slidable support member

Abstract

A communications interconnect between the countermeasure controller of a countermeasure system and the dispenser containing the countermeasure payloads therein. Additionally, the present disclosure provides a power connection between the countermeasure controller and the countermeasure dispenser to deliver power to the countermeasure payloads, including smart payloads, utilizing existing vehicle wiring harnesses and wiring kits.

IPC Classes  ?

• H04B 3/54 - Systems for transmission via power distribution lines
• F41J 2/02 - Active targets transmitting infrared radiation
• F42B 5/15 - Cartridges, i.e. cases with propellant charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material
• F42B 12/48 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materialsProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for producing chemical or physical reactionProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for signalling for dispensing gases, vapours, powders or chemically-reactive substances smoke-producing
• F42B 12/70 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materialsProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for producing chemical or physical reactionProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for signalling for dispensing discrete solid bodies for dispensing radar chaff or infrared material
• F41H 3/00 - Camouflage, i.e. means or methods for concealment or disguise

Abstract

A communications interconnect between the countermeasure controller of a countermeasure system and the dispenser containing the countermeasure payloads therein. Additionally, the present disclosure provides a power connection between the countermeasure controller and the countermeasure dispenser to deliver power to the countermeasure payloads, including smart payloads, utilizing existing vehicle wiring harnesses and wiring kits.

IPC Classes  ?

• B64D 1/04 - Dropping, ejecting, or releasing articles the articles being explosive, e.g. bombs
• B64D 7/04 - Arrangement of military equipment, e.g. armaments, armament accessories or military shielding, in aircraftAdaptations of armament mountings for aircraft the armaments being firearms fixedly mounted
• F41A 19/59 - Electromechanical firing mechanisms, i.e. the mechanical striker element being propelled or released by electric means
• F41A 19/60 - Electric firing mechanisms characterised by the means for generating electric energy
• F41A 19/70 - Electric firing pinsMountings therefor
• F41F 3/042 - Rocket or torpedo launchers for rockets the launching apparatus being used also as transport container for the rocket
• F41F 3/06 - Rocket or torpedo launchers for rockets from aircraft
• F41F 3/065 - Rocket pods, i.e. detachable containers for launching a plurality of rockets
• F42B 5/08 - Cartridges, i.e. cases with propellant charge and missile modified for electric ignition
• F42B 5/145 - Cartridges, i.e. cases with propellant charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances
• F42B 5/15 - Cartridges, i.e. cases with propellant charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material
• B64D 1/02 - Dropping, ejecting, or releasing articles
• B64D 7/02 - Arrangement of military equipment, e.g. armaments, armament accessories or military shielding, in aircraftAdaptations of armament mountings for aircraft the armaments being firearms
• F41A 19/58 - Electric firing mechanisms
• F41A 19/69 - Electric contacts or switches peculiar thereto
• F41F 3/04 - Rocket or torpedo launchers for rockets
• F42B 5/02 - Cartridges, i.e. cases with propellant charge and missile
• F42B 5/03 - Cartridges, i.e. cases with propellant charge and missile containing more than one missile

Abstract

A countermeasure dispensing system (CMDS) that expands a legacy set of firing lines to a set of expanded firing lines and a set of polling lines. CMDS includes a sequencer, a breechplate that has a set of fire pins, an embedded fire select multiplexing (EFSM) assembly that is operatively connected with the breechplate and the sequencer. The EFSM assembly includes a set of firing lines that operatively connects with the sequencer and the set of fire pins of the breechplate, wherein at least one firing line is configurable for a desired state. The EFSM assembly also includes a set of polling lines that operatively connects with the sequencer and a control logic circuit (CLC) of the EFSM to configure the desired state for the at least one firing line.

IPC Classes  ?

• F42B 5/15 - Cartridges, i.e. cases with propellant charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material
• B64D 7/00 - Arrangement of military equipment, e.g. armaments, armament accessories or military shielding, in aircraftAdaptations of armament mountings for aircraft
• F41A 19/68 - Electric firing mechanisms for multibarrel guns
• F42B 4/26 - FlaresTorches

Abstract

A signal acquisition device includes a first stage processing module and a second stage processing module. The first stage processing module is configured to correlate a first set of a plurality of radio frequency (RF) signal samples to a plurality of generated tones, and to output a plurality of interpolated (candidate) tones each having first correlation magnitudes exceeding a first threshold value. The second stage processing module is configured to correlate a second set of the RF signal samples to a plurality of code signals, and to output a plurality of output tones each having second correlation magnitudes exceeding a second threshold value, where the second set of RF signal samples correspond to the interpolated tones.

IPC Classes  ?

• G01S 19/24 - Acquisition or tracking of signals transmitted by the system

Abstract

A sample and hold amplifier output buffer with the low leakage of metal oxide semiconductor field effect transistors (MOSFET) combined with the linearity and dynamic range of silicon-germanium (SiGe) bipolar junction transistors (BJT). In one aspect, the present disclosure provides a sample and hold amplifier output buffer placing a MOSFET input device between the base and emitter of a high linearity SiGe BJT.

IPC Classes  ?

• H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors

Abstract

A countermeasure dispensing system (CMDS) that expands a legacy set of firing lines to a set of expanded firing lines and a set of polling lines. CMDS includes a sequencer, a breechplate that has a set of fire pins, an embedded fire select multiplexing (EFSM) assembly that is operatively connected with the breechplate and the sequencer. The EFSM assembly includes a set of firing lines that operatively connects with the sequencer and the set of fire pins of the breechplate, wherein at least one firing line is configurable for a desired state. The EFSM assembly also includes a set of polling lines that operatively connects with the sequencer and a control logic circuit (CLC) of the EFSM to configure the desired state for the at least one firing line.

IPC Classes  ?

• F41A 19/68 - Electric firing mechanisms for multibarrel guns
• F41A 19/58 - Electric firing mechanisms
• F41A 19/65 - Electric firing mechanisms for automatic or burst-firing mode for giving ripple fire, i.e. using electric sequencer switches for timed multiple-charge launching, e.g. for rocket launchers
• F41A 19/69 - Electric contacts or switches peculiar thereto

Abstract

An electronic warfare (EW) system that is to be installed on a platform has a plurality receivers that are part of the EW system. A first receiver may be an electronic countermeasure (ECM) component to generate a jamming signal. The first receiver operates at a first bandwidth. A second receiver may be a radar warning (RW) component to discriminate characteristics of an incoming first signal from a first emitter. The EW system has a processor that executes instructions to integrate a blanking technique for the RW component and the ECM component to interoperate to collect data at the same time on each respective receiver.

IPC Classes  ?

• G01S 7/38 - Jamming means, e.g. producing false echoes
• G01S 7/02 - Details of systems according to groups , , of systems according to group

Abstract

An electronic warfare (EW) system that is to be installed on a platform has a plurality receivers that are part of the EW system. A first receiver may be an electronic countermeasure (ECM) to discriminate characteristics of an incoming first signal from a first emitter. The first receiver operates at a first bandwidth on a first scan schedule. A second receiver may be a radar warning (RW) component to discriminate characteristics of an incoming second signal from a second emitter. The second receiver operates at a second bandwidth on a second scan schedule. The EW system has a processor that executes instructions to interleave the first scan schedule and second scan schedule. Interleaving the first scan schedule and the second scan schedule may provide the EW system as an integrated EW system with predictable performance that is optimized for environmental load and receiver allocation.

IPC Classes  ?

• G01S 7/38 - Jamming means, e.g. producing false echoes

Abstract

Techniques are provided for improved precision timekeeping for a global positioning system (GPS) receiver. A methodology implementing the techniques according to an embodiment includes generating a system clock signal at a reference frequency, the system clock signal having a first frequency stability. The method also includes generating an auxiliary clock signal at an auxiliary clock frequency, the auxiliary clock signal having a second frequency stability that is greater than the first frequency stability, wherein the auxiliary clock frequency differs from the reference frequency by a frequency offset. The method further includes calculating corrections to the auxiliary clock signal based on a measure of error in the frequency offset and on an estimate of error in the auxiliary clock frequency. The method further includes using the calculated corrections to generate a timing signal, during absence of received GPS satellite signals (e.g., during times when less than four satellite signals are received).

IPC Classes  ?

• H03L 7/06 - Automatic control of frequency or phaseSynchronisation using a reference signal applied to a frequency- or phase-locked loop
• G04R 20/02 - Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
• G06F 1/12 - Synchronisation of different clock signals
• G06F 17/18 - Complex mathematical operations for evaluating statistical data
• H03L 1/00 - Stabilisation of generator output against variations of physical values, e.g. power supply

Abstract

Techniques are provided for power management of a global positioning system (GPS) receiver. A methodology implementing the techniques according to an embodiment includes calculating a pedestal ionospheric delay based on a phase difference between a first GPS signal at a first center frequency and a second GPS signal at a second center frequency. The method also includes powering off a processing chain configured to provide the second GPS signal. The method further includes calculating, at periodic intervals, a secondary ionospheric delay based on a phase difference between an upper sideband and a lower sideband of the first GPS signal and accumulating differences between consecutively calculated secondary ionospheric delays. The method further includes, in response to the accumulated differences exceeding a threshold value, powering on the processing chain configured to provide the second GPS signal and recalculating the pedestal ionospheric delay.

IPC Classes  ?

• G01S 19/34 - Power consumption
• G01S 19/07 - Cooperating elementsInteraction or communication between different cooperating elements or between cooperating elements and receivers providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections
• G01S 19/37 - Hardware or software details of the signal processing chain

Abstract

An electronic warfare (EW) system that is to be installed on a platform has a plurality receivers that are part of the EW system. A first receiver discriminates characteristics of an incoming first signal. These first signal characteristics are indicative of a source direction or geolocation of a first emitter producing the first signal. The first receiver operates at a first bandwidth. A second receiver discriminate characteristics of an incoming second signal. These second signal characteristics are indicative of a source direction or geolocation of a second emitter producing the second signal. The second receiver operates at a different second. One or both of the first emitter and the second emitter are at a point of interest (POI). The EW system has a processor that executes instructions for managed extensions to implement an adaptive scan schedule to report a correct and unambiguous identification (CUID) of the POI.

IPC Classes  ?

• G01S 7/38 - Jamming means, e.g. producing false echoes
• G01S 7/02 - Details of systems according to groups , , of systems according to group

Abstract

An integrated antenna and tether structure includes (i) a core including a first dielectric material, (ii) a first layer including a second dielectric material and a first conductive material thereon, the first layer wrapped around at least a section of the core, (iii) a plurality of wires including a second conductive material and wrapped around at least a section of the first layer, (iv) a second layer including a third dielectric material and a third conductive material thereon, the second layer wrapped around at least a section of the plurality of wires, and (v) an outer layer comprising a fourth dielectric material, the outer layer wrapped around at least a section of the second layer. In an example, the antenna structure is to transmit signals at a frequency of at most 50 Megahertz (MHz).

IPC Classes  ?

• H01Q 7/08 - Ferrite rod or like elongated core
• H01Q 1/42 - Housings not intimately mechanically associated with radiating elements, e.g. radome

Abstract

A calibration assembly for a guided vehicle. The calibration assembly includes an orientation marker that operably engages with a first guidance apparatus of the guided vehicle. The calibration assembly also includes an imaging assembly that operably engages with and is in electrical communication with a second guidance apparatus of the guided vehicle. When the imaging assembly captures the orientation marker at a translated position for at least one cycle, the imaging assembly calibrates a rotational displacement between a first guidance direction of the first guidance apparatus and a second guidance direction of the second guidance apparatus based on an angular displacement of the orientation marker measured between a zeroed position denoting the first guidance direction and the translated position.

IPC Classes  ?

• G01B 11/27 - Measuring arrangements characterised by the use of optical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of optical techniques for testing the alignment of axes for testing the alignment of axes
• F41G 7/00 - Direction control systems for self-propelled missiles
• G01C 11/04 - Interpretation of pictures
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots

Abstract

A calibration assembly for a guided vehicle. The calibration assembly includes an orientation marker that operably engages with a first guidance apparatus of the guided vehicle. The calibration assembly also includes an imaging assembly that operably engages with and is in electrical communication with a second guidance apparatus of the guided vehicle. When the imaging assembly captures the orientation marker at a translated position for at least one cycle, the imaging assembly calibrates a rotational displacement between a first guidance direction of the first guidance apparatus and a second guidance direction of the second guidance apparatus based on an angular displacement of the orientation marker measured between a zeroed position denoting the first guidance direction and the translated position.

IPC Classes  ?

• F41G 7/00 - Direction control systems for self-propelled missiles
• B64D 45/00 - Aircraft indicators or protectors not otherwise provided for
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• H04N 23/56 - Cameras or camera modules comprising electronic image sensorsControl thereof provided with illuminating means

Abstract

Techniques for direction finding and geolocation of a GPS spoofer. A methodology implementing the techniques according to an embodiment includes steering a beam in a direction selected from a search constellation and measuring a first signal power received through the steered beam. The method also includes steering a null in the selected direction and measuring a second signal power received through the steered null. The method further includes calculating a difference between the first signal power and the second signal power and estimating an angle of arrival (AOA) of the GPS spoofer signal as the selected direction if the calculated difference exceeds a threshold power value. In some such examples, the method includes accumulating signals having four similar estimated AOAs, associated with unique pseudo-random noise codes, and employing a GPS receiver to calculate a candidate position of a source of the GPS spoofer signals based on the accumulated signals.

IPC Classes  ?

• G01S 19/21 - Interference related issues

Abstract

Techniques are provided for improved precision timekeeping for a global positioning system (GPS) receiver. A methodology implementing the techniques according to an embodiment includes generating a system clock signal at a reference frequency, the system clock signal having a first frequency stability. The method also includes generating an auxiliary clock signal at an auxiliary clock frequency, the auxiliary clock signal having a second frequency stability that is greater than the first frequency stability, wherein the auxiliary clock frequency differs from the reference frequency by a frequency offset. The method further includes calculating corrections to the auxiliary clock signal based on a measure of error in the frequency offset and on an estimate of error in the auxiliary clock frequency. The method further includes using the calculated corrections to generate a timing signal, during absence of received GPS satellite signals (e.g., during times when less than four satellite signals are received).

IPC Classes  ?

• G04R 40/06 - Correcting the clock frequency by computing the time value implied by the radio signal
• G04R 20/04 - Tuning or receivingCircuits therefor

Abstract

An electronic systems package hermetically sealed or equivalent with an electronics coolant liquid immersing the electronic components therein to absorb and dissipate heat away from these electronic components. Also provided is a housing including custom channelization to induce convective eddy currents in an electronics coolant liquid to further direct heat away from sensitive electronic components therein.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
• H01L 23/44 - Arrangements for cooling, heating, ventilating or temperature compensation the complete device being wholly immersed in a fluid other than air

Abstract

A lead screw control actuation system. A system according to an embodiment includes a motor configured to rotate a lead screw that is configured to increase torque provided by the motor. The lead screw is coupled to a nut through a threaded opening such that rotation of the lead screw causes the nut to move along a longitudinal axis of the lead screw. The nut includes a slot oriented in a direction perpendicular to the direction of motion of the nut. The system further includes a lever arm including a pin at a first end of the lever arm, the pin configured to slide in the slot of the nut to cause the lever arm to rotate in response to the motion of the nut. A second end of the lever arm is coupled to a canard such that rotation of the lever arm causes the canard to rotate.

IPC Classes  ?

• B64C 13/28 - Transmitting means without power amplification or where power amplification is irrelevant mechanical
• B64C 39/12 - Canard-type aircraft
• B64U 10/00 - Type of UAV
• F16H 37/12 - Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these three types

Abstract

An antenna assembly includes a conductive ground plane, a lower layer of dielectric material above the ground plane, and an upper layer of dielectric material above the lower layer of dielectric material. In an example, at least one of the lower or upper layers of dielectric material comprise dielectric foam. The antenna assembly further includes a conductive feed line between at least a section of the lower layer of dielectric material and the upper layer of dielectric material, and a conductive patch above the upper layer of dielectric material. In an example, a dielectric constant of the lower layer of dielectric material is at least 25%, or at least 50% more, or at least 100% more, or at least 200% more, or at least 500% more than a dielectric constant of the upper layer of dielectric material.

IPC Classes  ?

• H01Q 9/04 - Resonant antennas
• B33Y 80/00 - Products made by additive manufacturing

Abstract

maxi can be larger for elements that require larger rotations, and can be varied during the slew time. The rotatable element can be a gimbal pointer mirror or a Risley prism element.

IPC Classes  ?

• H02P 6/16 - Circuit arrangements for detecting position
• H02P 6/08 - Arrangements for controlling the speed or torque of a single motor

Abstract

A configurable interface for an electronic component includes a keying insert and an interface plate. The keying insert is configured to provide multiple keying options. The interface plate has an opening for receiving the keying insert. The interface may further include additional features, such as guidance for blind mate scenarios, any of a basket, a busing having a recess, and a retention cover. In one example, the retention cover has a tab configured to extend into the recess of the bushing to secure one end of the retention cover to the bushing. The keying insert can include a keyway offset from an axis passing through a center of the keying insert. The retention cover is configured, while secured to the interface plate, to secure the basket in one opening of the interface plate and to secure the keying insert in another opening of the interface plate.

IPC Classes  ?

• H01R 13/645 - Means for preventing, inhibiting or avoiding incorrect coupling by exchangeable elements on case or base
• H01R 13/518 - Means for holding or embracing insulating body, e.g. casing for holding or embracing several coupling parts, e.g. frames
• H01R 43/18 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing bases or cases for contact members

Abstract

A circuit includes (i) an input terminal for receiving a single-ended input signal; (ii) an operational amplifier (op-amp) comprising an inverting input, a non-inverting input, and an op-amp output; (iii) a capacitor coupled between the inverting input and the op-amp output; (iv) a first resistor coupled between the inverting input and the input terminal; and (v) a second resistor coupled between the non-inverting input and the input terminal. In an example, a phase locked loop (PLL) includes the circuit, and a voltage controlled oscillator (VCO) is coupled to the output of the operational amplifier.

IPC Classes  ?

• H03D 3/24 - Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
• H03L 7/089 - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
• H03L 7/099 - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop

Abstract

A memory device includes at least three digital storage circuits arranged in parallel, the digital storage circuits each configured to store state data representing a bit of data in a first or second state; a data input configured to receive input data, the input data representing a bit of data in the first or second state; a voter having a voter output, the voter configured to generate output data at the voter output, the output data representing which of the first and second state are in a majority among the state data stored in each of the digital storage circuits; and a multiplexer operatively coupled to the data input, the voter output, and an input of each of the digital storage circuits, the multiplexer configured to output, to each of the digital storage circuits, one of the input data and the output data based on a functional enable signal.

IPC Classes  ?

• G06F 11/10 - Adding special bits or symbols to the coded information, e.g. parity check, casting out nines or elevens
• G06F 11/08 - Error detection or correction by redundancy in data representation, e.g. by using checking codes
• H03K 19/003 - Modifications for increasing the reliability
• H03M 13/03 - Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words

Abstract

A memory device includes at least three digital storage circuits arranged in parallel, the digital storage circuits each configured to store state data representing a bit of data in a first or second state; a data input configured to receive input data, the input data representing a bit of data in the first or second state; a voter having a voter output, the voter configured to generate output data at the voter output, the output data representing which of the first and second state are in a majority among the state data stored in each of the digital storage circuits; and a multiplexer operatively coupled to the data input, the voter output, and an input of each of the digital storage circuits, the multiplexer configured to output, to each of the digital storage circuits, one of the input data and the output data based on a functional enable signal.

IPC Classes  ?

• G06F 11/00 - Error detectionError correctionMonitoring
• G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance

Abstract

A receiver includes a first vapor cell and a second vapor cell, wherein the first vapor cell is exposed to a signal of interest and an interfering signal, and wherein the second vapor cell is exposed to at least the interfering signal. In an example, the first and second vapor cells includes an atomic medium including Rydberg atoms. The receiver includes an optical arrangement configured to (i) transmit a first probe laser beam to the first vapor cell, and (ii) transmit a second probe laser beam to the second vapor cell; an interferometer configured to (i) process a first laser beam from the first vapor cell, and a second laser beam from the second vapor cell, and (ii) generate a plurality of voltage signals; and a circuit configured to process the plurality of voltage signals and generate an output signal indicative of the signal of interest.

IPC Classes  ?

• G01R 29/08 - Measuring electromagnetic field characteristics
• G02B 27/14 - Beam splitting or combining systems operating by reflection only

Abstract

An antenna assembly includes a conductive ground plane, a ground shield extending vertically above from the ground plane, and a feed line extending vertically upwards from an opening within the ground plane, without contacting the ground plane. The antenna assembly further includes a first conductive element in contact with an upper surface of the ground shield, and a second conductive element in contact with an upper surface of the feed line, with a slot between the first conductive element and the second conductive element. In an example, the first and second conductive elements are at least in part coplanar, and at least in part on a horizontal plane that is substantially parallel to the ground plane, and separated from the ground plane by a layer of dielectric material.

IPC Classes  ?

• H01Q 21/00 - Antenna arrays or systems
• H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart

Abstract

A warhead includes a casing having a periphery wall that extends along a central axis from a forward end of the casing to a rearward end of the casing. The casing defines a cavity configured to contain an explosive material, wherein the forward end of the casing includes a first thread pattern configured to engage a guidance system casing, and the rearward end of the casing includes a second thread pattern configured to engage a propulsion system casing. A first row of fragments is arranged along a first section of the periphery wall of the casing. A plurality of second rows of fragments is rearward of the first row of fragments and arranged along a second section of the periphery wall of the casing. In an example, each of the first and second sections tapers inward towards the central axis as it extends toward the forward end of the casing.

IPC Classes  ?

• F42B 12/32 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction the hull or case comprising a plurality of discrete bodies, e.g. steel balls, embedded therein
• F42B 12/10 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge

Abstract

Photonic coupling mechanisms and techniques are described. In one example, a method includes writing a photonic wirebond to at least one optical waveguide to position the photonic wirebond at a first coupling position relative to a crystalline microresonator, injecting optical power into the at least one optical waveguide, determining a number of generated light modes within the crystalline microresonator, and performing a peak search to locate at least one soliton step corresponding to at least one of the generated light modes within the crystalline microresonator.

IPC Classes  ?

• G02F 1/35 - Non-linear optics
• G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
• G02B 6/42 - Coupling light guides with opto-electronic elements
• G02F 1/365 - Non-linear optics in an optical waveguide structure
• H01S 3/063 - Waveguide lasers, e.g. laser amplifiers

Abstract

Photonic coupling mechanisms are described. In one example, an evanescent coupler includes a substrate, first and second optical waveguides formed on the substrate, and a photonic wirebond having first and second end regions coupled to the first and second optical waveguides, respectively and a loopback portion extending between the first and second end regions, the photonic wirebond extending away from the first optical waveguide by an extension length.

IPC Classes  ?

• G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
• G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
• G02B 6/30 - Optical coupling means for use between fibre and thin-film device