Abstract

A method for moving object detection, comprising generating a time series of multi-exposures of scenes, each multi-exposure of a scene comprising a sequence of at least two at least partially overlapping images of that scene captured in rapid succession, wherein the time series of multi-exposures periodically revisits substantially the same scenes, detecting moving objects within each multi-exposure by comparing its sequence of overlapping images, and tracking objects by comparing moving objects detected within multi-exposures of substantially the same scenes.

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

The present invention relates to a laser based system for protecting a platform against an armament equipped with an optical homing head element, that includes a command and control assembly equipped with an interface to a detection and acquisition system that detects and locates a threatening armament and receives from it a warning about the detection of said threatening armament combined with data relating to it; and a laser source operable by the command and control assembly in order to produce the required energy for jamming the optical head of the threatening armament; and wherein the system is characterized by that it includes in addition a sectarian array of a plurality of end units that are connected unto the laser source for selectively routing laser energy from the source to an end unit that was selected by the command and control assembly as the end unit that is best suited under prevailing conditions for pointing at the threatening armament and attacking it by emitting a laser beam in its direction.

IPC Classes  ?

• G01B 11/26 - 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
• F41H 5/00 - ArmourArmour platesShields

Abstract

An airborne reconnaissance system which comprises: (a) A focal plane array positioned at a focal plane of an optical unit, said focal plane array having an area A, and comprises a plurality of optical pixels sensitive to light; (b) Optical unit for acquiring light rays from a terrain portion, said optical unit comprises a plurality of optical components that are positioned along an optical path, and designed to maneuver said light rays to produce at the focal plane an image of said terrain portion, said image having an area which is several times larger than the focal plane array area A; (c) At least one light diversion optical component along said optical path which, for each acquired terrain portion image, switches between several n states, thereby causing in each state different diversion of said light rays within said path, thereby to impinge in each state another fraction of the terrain image on said focal plane array; and (d) Capturing means for recording in each state of the at least one light diversion optical component the portion of the terrain image which is impinged on the focal plane array.

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• G01C 11/02 - Picture-taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures

Abstract

3 . . . , wherein n, m, q . . . being integers not equal to zero, for receiving a non-linear response of said radiation from objects located within the said space of interest, and wherein the system is characterized in that said transmitted pulses are narrow pulses having duration in the range of between about 1 nanoseconds and about 100 nanoseconds.

IPC Classes  ?

• G01S 7/292 - Extracting wanted echo-signals
• G01S 13/00 - Systems using the reflection or reradiation of radio waves, e.g. radar systemsAnalogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified

Abstract

A method for measuring a range of a target illuminated by an active system transmitting pulsed signals includes the following steps. Modulating the frequency of the pulsed signals by employing quadratic frequency modulation (QFM) having a predefined frequency bandwidth. Signals reflected from the target are received in time intervals separating between the ends of the transmitted pulses to the leading edge of the transmitted pulse immediately following the one transmitted pulse. Comparing the absolute value of the output of a normalized filter matched to the QFM applied to the received signals with a detection threshold, and comparing the time in which the threshold is exceeded to a calibration scale.

IPC Classes  ?

• G01S 15/10 - Systems for measuring distance only using transmission of interrupted, pulse-modulated waves

Abstract

The invention relates to an airborne laser image capturing system which comprises: (a) A laser source and laser focal plan array; (b) A pulse generator; (c) A scanning unit for providing to the gimbals a scanning signal for effecting a sequential stepping-scanning movement to scan an area in which the target is included; (d) A motion compensation unit; (e) A timing unit for: (e.i) Activating said pulse generator during a scanning period, thereby to produce over the target a series of illumination spots, each of said spots overlaps at least a portion of one or more adjacent spots; and (e.ii) Activating said laser focal plan array during the illumination of the target thereby to capture many of distinct spot-images (f) A correlating unit for correlating images; and (g) A combining unit for combining the spot-images to a complete image of the scanned area.

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• G03B 19/00 - Cameras
• G03B 17/48 - Details of cameras or camera bodiesAccessories therefor adapted for combination with other photographic or optical apparatus

Abstract

An airborne reconnaissance system comprising: (1) Gimbals having at least two degrees of freedom; (2) At least one array of light sensors positioned on the gimbals, for being directed by the same within at least two degrees of freedom; (3) Map storage means for storing at least one Digital Elevation Map of an area of interest, divided into portions; (4) Inertial Navigation System for real-time providing to a gimbals control unit navigation and orientation data of the aircraft with respect to a predefined global axes system; (5) Portion selection unit for selecting, one at a time, another area portion from the area of interest; and (6) servo means for directing the gimbals. The system uses data from the inertial navigation system and from the digital elevation map for real-time calculating direction to selected area portions, and for maintaining the direction during integration of light from the terrain, and for producing corresponding images of area portions.

IPC Classes  ?

• G01C 11/02 - Picture-taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
• G01S 3/786 - Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically

Abstract

A method of mapping an arena that includes a number of points. The method includes a platform at a constant velocity past the arena, when the platform moves past the arena, a number of chirp signals is transmitted towards the arena, and for each signal receives a corresponding backscattered signal from the arena. The method further downconverts the corresponding backscattered signal to a corresponding baseband signal, samples the baseband signals to provide, for each chirp signal, a number of respective baseband samples

IPC Classes  ?

• G01S 13/00 - Systems using the reflection or reradiation of radio waves, e.g. radar systemsAnalogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified

Abstract

The present invention relates to a laser based system for protecting a platform against an armament (25) equipped with an optical homing head element (30), that comprises a command and control assembly (35) equipped with an interface to a detection and acquisition system that detects and locates a threatening armament (25) and receives from it a warning about said detection of said threatening armament (25) combined with data relating to it; and a laser source (15) operable by said command and control assembly (35) in order to produce the required energy for jamming said optical head (30) of said threatening armament; and wherein said system is characterized by that it comprises in addition a sectarian array (45) of a plurality of end units that are connected unto said laser source for selectively routing laser energy from said source (15) to an end unit (50) that was selected by said command and control assembly (35) as the end unit (50) that is best suited under prevailing conditions for pointing at said threatening armament (25) and attacking it by emitting a laser beam (17) in its direction.

IPC Classes  ?

• F41H 13/00 - Means of attack or defence not otherwise provided for
• G01S 7/495 - Counter-measures or counter-counter-measures
• F41G 7/22 - Homing guidance systems

Abstract

A warhead system for a projectile-intercepting munition, the warhead system includes a fuselage having an axis and one or more explosively-formed-projectile charge. The explosively-formed-projectile is with a length and configured to generate one or more explosively formed blade projectile propagating substantially perpendicular to the length, the explosively-formed-projectile charge assuming a deployed state wherein the length of the explosively-formed-projectile charge is non-parallel to the axis, the deployed state and the explosively-formed-projectile charge configured such that, when the explosively-formed-projectile charge is detonated in the deployed state, the explosively formed blade projectile propagates in a direction non-coplanar with the length of the explosively-formed-projectile charge and the axis of the fuselage.

IPC Classes  ?

• F42B 10/00 - Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missilesArrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
• F42B 12/00 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
• F42B 30/00 - Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used

Abstract

The present invention is about an automatic temperature regulating device for turning on and off a flow of cooling gas through a conduit. The flaps of the regulative valve are made of memory shape metal alloy. In the austenite phase the flaps are projected towards the direction of the flow of said gas, and in the martensite phase of the flaps, the flaps are relaxed

IPC Classes  ?

• G05D 23/02 - Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
• F25J 3/00 - Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification

Abstract

A multiband phase shifter (MBPS 82) consistes of at least two band phase shifters (BPS 83) Each BPS has a characteristic operating bandwidth such that the respective central frequency of the operating bandwidth of any such BPS is different than the other central frequencies of the other operating bandwidth associated with the other BPS respectively The MBPS input signal (IN 80) can be switched by switches (SW 84) to any of the BPS while a switch controller controls the switching

IPC Classes  ?

• H01P 1/18 - Phase-shifters

Abstract

A miniature lightweight high-maneuverability missile (10) has a missile body (12) with three sets of at least two aerodynamic control surfaces (14, 16, 18) for independent control of roll, pitch and yaw of the missile. Each set of control surfaces (14, 16, 18) is independently controlled by a corresponding actuator (20) deployed within the missile body (12). Other preferred features include selection of an elevation angle of incidence at a target, and switching between explosive and kinetic modes of operation.

IPC Classes  ?

• F41G 7/00 - Direction control systems for self-propelled missiles
• F42B 15/00 - Self-propelled projectiles or missiles, e.g. rocketsGuided missiles

Abstract

A potentially interfering node updatable database associated with the MAC, in each node, contains a limited number of unique identification numbers (UNIDs) referring to nodes likely to interfere with the transmission of the node. Typically these UNIDs are one or two hop neighbours. In addition to the actual nodes, the database also contains unique ID numbers of dummy nodes. Practically, the node database does not distinguish between real or dummy nodes. Selecting a certain node to transmit at a certain TS is brought about by a 'which node is to transmit in the next TS'(WINIT) function. This function takes into account all the UNIDs available in the UNID databases of the different nodes. When the WINIT selects a specific UNID to be active in the upcoming TS, the relevant MAC element in the respective node, invokes the transmission.

IPC Classes  ?

• H04B 7/212 - Time-division multiple access

Abstract

A safety selector for selectively implementing a firing disabled position for the prevention of unintentional firing of a firearm. Two prongs of the safety selector push a cross bolt safety actuation lever, to the right or to the left. An over center toggle means keeps the safety selector to either extreme left or right positions, such that one of the positions is associated with firing enablement and the other position is associated with firing disablement A DC electrical motor provides torque which is transferred through a torque transferring mechanism, to the safety selector.

IPC Classes  ?

• F41A 17/00 - Safety arrangements, e.g. safeties
• F41A 19/00 - Firing or trigger mechanismsCocking mechanisms

Abstract

A method for displaying point-of-interest coordinate locations in perspective images and for coordinate-based information transfer between perspective images on different platforms includes providing a shared reference image of a region overlapping the field of view of the perspective view. The perspective view is then correlated with the shared reference image so as to generate a mapping between the two views. This mapping is then used to derive a location of a given coordinate from the shared reference image within the perspective view and the location is indicated in the context of the perspective view on a display.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06K 9/40 - Noise filtering
• G06K 9/64 - Methods or arrangements for recognition using electronic means using simultaneous comparisons or correlations of the image signals with a plurality of references, e.g. resistor matrix

Abstract

A process for balancing the execution of hazardous activity carried out in connection with an unmanned boat which is remotely controlled by two independent wireless communications channels. The process includes receiving signals from both communications channels. Subsequently, data is extracting from the two signals. After confirming the presence of two respective messages, one from each channel, a command is executed relating to safety issues, relating to the execution of the hazardous activity.

IPC Classes  ?

• B63H 23/00 - Transmitting power from propulsion power plant to propulsive elements

Abstract

A method for controlling the cruise of an autonomous vessel incorporates using a subsystem of a payload of the vessel functional in generating locational data relating to a target. A controller for controlling the cruise control subsystems determining the bearing and the velocity of said vessel.

IPC Classes  ?

• B63H 23/00 - Transmitting power from propulsion power plant to propulsive elements

Abstract

Methods and apparatus for effecting a non-uniformity correction of images of a scene obtained with an array of detector elements (212) are disclosed. A first image (A) of the scene having a first integration period is acquired using the array of detector elements (212). A second image (B) of the scene having a different integration period is acquired, and a corrected image of the scene is generated by computing a difference of the images. In some embodiments, the first and second images are images of substantially identical scenes. According to some embodiments, the images are infrared images. Optionally, the corrected image is subjected to further correction using pixel dependent correction coefficients, such as gain coefficients. Exemplary image detection elements include but are not limited to InSb detector elements and ternary detector elements, such as InAISb, MCT (Mercury Cadmium Telluride), and QWlP technology (Quantum Well Infrared Photodiodes). In some embodiments, the detector elements are cooled to a temperature substantially equal to an atmospheric boiling point of liquid nitrogen. Alternatively, the detector elements are cooled to a temperature below an atmospheric boiling point of liquid nitrogen, or any other operating temperature.

IPC Classes  ?

• H04N 5/335 - Transforming light or analogous information into electric information using solid-state image sensors [SSIS]

Abstract

A biometric facial surveillance system comprise at least one independent, stand-alone biometric unit operative to acquire and process biometric parameters to provide a complete verification or identification of a person. In a preferred embodiment, each biometric unit includes a camera operative to provide a two dimensional (2D) video stream and a 3D pixel depth data stream, and at least one processing unit operative to process the 2D video stream and a 3D pixel depth data stream into biometric parameters that verify or identify the particular person. In alternative embodiments, a plurality of biometric units is connected to a biometric server and an applications server which provide management functions.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

An imaging system operative in a frequency range starting from X band and including the terahertz region has a receiving antenna having a spheroidal reflector. One or more arrays of detectors disposed at the focus adjacent to the reflector of the receiving antenna provides for imaging targets within a range of a few meters around the second focus of the spheroidal reflector. Images of targets such as of concealed objects under clothing are generated and displayed as is known in the art. A method for manufacturing reflectors of receiving antennae given a detection range and a focal range is provided.

IPC Classes  ?

• H01L 25/00 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices

Abstract

A system for surveillance of a region of interest (fig. 1). The system includes a number of monitors (12 of fig. 1), each monitor operative to acquire and to transmit periodically a description of a respective portion of the region of interest. The monitors (12 of fig. 1) are operative to transmit the descriptions in a first communication channel with insufficient bandwidth for all the monitors to transmit the descriptions simultaneously. The system also includes a control station (14 of fig. 1) for allocating respective portions of the channel to the monitors for the transmissions according to a number of rules. One or more of the rules includes feedback from the monitors that is separate from the descriptions (18 and 20 of fig. 1).

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• H04N 9/47 - Colour synchronisation for sequential signals

Abstract

An information system that includes a plurality of object types each being associated with an intra data source. Each object type includes a plurality of objects each including object selected data and at least one link to other objects.

IPC Classes  ?

• G06F 7/06 - Arrangements for sorting, selecting, merging, or comparing data on individual record carriers

Abstract

A temperature responsive valve (TRV), for controlling a flow of gas, employing a shape memory alloy (SMA) wire. The SMA wire is forced by the flow of gas to elongate at temperatures not exceeding a limit known as the transition temperature lower than the austenitic transition temperature. The elongation at a temperature lower than the austenitic transition temperature may be extensive enough to cause a nozzle of the TRV to be blocked, preventing further passage of the gas.

IPC Classes  ?

• G05D 23/00 - Control of temperature
• H01H 61/06 - Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts
• F16K 17/38 - Safety valvesEqualising valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature

Abstract

A method for detection the presence of a man-made object partially occluded in a natural environment. The method includes the steps of providing an image segment from three dimensional ladar data, grouping one or more coplanar portion of the pixels into a cluster of planar sections, each planar section including three or more pixels, classifying the cluster based on one or more criterion selected from a group of criteria.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

The present invention provides an explosive composition of substantially reduced sensitivity and low f lammability, being definable as an extremely insensitive detonating substance (EIDS) according to UN Regulations for the Transport of Dangerous Goods and comprising one or more explosive material 42-58% vol. , one or more fire retardant material 15-26% vol. and a binder 20-36% vol.

IPC Classes  ?

• C06B 23/00 - Compositions characterised by non-explosive or non-thermic constituents
• C06B 25/00 - Compositions containing a nitrated organic compound
• C06B 45/00 - Compositions or products which are defined by structure or arrangement of component or product
• F41H 5/007 - Reactive armourDynamic armour

Abstract

The present invention provides elements for making a protective reactive armor to be fitted on the outside of an enclosure liable to be exposed to attack by shaped-charge warheads and other threats, such as kinetic energy projectiles and fragments, to thereby enhance survivability of the enclosure and its contents. The invention further provides a non-explosive energetic material useful for such reactive armor elements.

IPC Classes  ?

• C06B 45/12 - Compositions or products which are defined by structure or arrangement of component or product having contiguous layers or zones
• C06D 5/06 - Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
• F41H 5/00 - ArmourArmour platesShields
• F41H 5/007 - Reactive armourDynamic armour

Abstract

The present invention relates to an airborne laser image capturing system overcoming line of sight vibrations in airborne laser image capturing systems, and increasing the effective range thereof. The system includes: (a) a laser source and laser focal plan array; (b) a pulse generator; (c) a scanning unit for providing to the gimbals a scanning signal for effecting a sequential stepping-scanning movement to scan an area in which the target is included; (d) a motion compensation unit; (e) a timing unit for: (e.i) activating the pulse generator during a scanning period, thereby to produce over the target a series of illumination spots; and (e.ii) activating the laser focal plan array during the illumination of the target thereby to capture many of distinct spot-images; (f) a correlating unit for correlating images; and (g) a combining unit for combining the spot-images to a complete image of the scanned area.