Produits et services

Electronic systems, embedded software sold as a component thereof and downloadable software that perform digital signal processing, command and control, radio signal receipt, digitization, storage, processing, and analysis of radio signal data, signals intelligence, namely, locating the source of radio signals, intercepting and decoding radio signals, and geolocation Engineering design services for electronic hardware systems and software that perform digital signal processing, command and control, radio signal receipt, digitization, processing and analysis, signals intelligence and geolocation; RF system and antenna design; Engineering design data analysis; orbit analysis

Abrégé

Systems and methods for detecting, localizing, and filtering signals such as radiofrequency signals using an array of antennas are disclosed. Input signals each containing a signal of interested are received, along with a reference signal sharing one or more characteristics of the signal-of-interest. Predetermined time delays and frequency shifts are applied to the input signals such that the signal-of-interest components of the signals are synchronized and to cancel any Doppler-shifting between the signal-of-interest components. A filtering process is employed to filter the shifted input signals and sum them such that a metric indicating the degree of difference between the reference signal and the summed filtered signals (such as the mean squared error, for example) is minimized.

Classes IPC  ?

• H04B 1/709 - Structure du corrélateur
• H04B 1/7097 - Aspects liés aux interférences
• H04B 1/10 - Dispositifs associés au récepteur pour limiter ou supprimer le bruit et les interférences

Produits et services

Electronic systems and software that perform digital signal processing, command and control, radio signal receipt, digitization, storage, processing, and analysis of radio signal data, signals intelligence namely, locating the source of radio signals, intercepting and decoding radio signals, and geolocation; RF amplifiers, radio systems and antennas; digital-to-analog and analog-to-digital converters; Field-programmable gate arrays (FPGAs); software defined radios Engineering design services for electronic hardware systems and software that perform digital signal processing, command and control, radio signal receipt, digitization, processing and analysis, signals intelligence and geolocation; RF system and antenna design; Engineering design data analysis; orbit analysis

Produits et services

wideband software defined radio (SDR) system comprised primarily of computer hardware and software for use in receiving, digitizing, processing and transmitting radio signals in the fields of signals intercept, intelligence and analysis, excluding autosound; Software defined radio (SDR) software platform, namely, processing platform for use in receiving, digitizing, processing and transmitting radio signals in the fields of signals intercept, intelligence and analysis, excluding autosound

Abrégé

The process validates measurement data that are consistent with the current orbit or allowable maneuvers for Earth-orbiting satellites. The validated data may be processed to detect both large and small maneuvers; large maneuvers that may have been rejected by standard data validation process and small maneuvers that may have been missed. Large maneuvers may present as “trends” in the residuals above the noise threshold from multiple sensors. Small maneuvers may present as a deviation from the expected orbit. The OD engine is suitably configured (as per normal operation) to enforce data reduction on any outliers (e.g. >3 sigma). The maneuver estimation routines employ an objective function for selection of maneuver estimates that combines a residual fit to the current orbit and maneuver, orbit consistency and a penalty for validated but unused data (data that is rejected by the OD engine). The combination of enforcing data reduction in the OD engine of validated data while penalizing that reduction biases the estimation routines to select maneuver estimates that fit all or substantially all of the validated data. The maneuver estimation routines also suitably use a center time & duration window to select the maneuver estimate and iterate the process as new measurement data is received to refine the maneuver estimate.

Classes IPC  ?

• B64G 3/00 - Observation ou poursuite des véhicules astronautiques
• G01C 21/24 - NavigationInstruments de navigation non prévus dans les groupes spécialement adaptés pour la navigation des cosmonautes
• B64G 1/24 - Appareils de guidage ou de commande, p. ex. de commande d'assiette

Abrégé

Systems and methods of correlating potential transmitters with received radio signals is provided. Image data is provided including paths traveled by potential transmitter. Potential transmitters are identified within the image data along with path segments traveled by potential transmitters. A first and second transmitter calculate certain parameters of received signals assuming that signals originated along the path segments. The calculated signal parameters are then compared to measured signal parameter to determine whether a transmitter is associated with a particular path.

Classes IPC  ?

• G01S 3/28 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée utilisant la comparaison d'amplitude de signaux provenant simultanément d'antennes ou de systèmes d'antennes réceptrices ayant des caractéristiques de directivité orientées différemment

Abrégé

A method of geolocating a stationary transmitter observed by a fixed receiver device and at least two receiver devices, at least one of the receiver devices moving includes obtaining wavelength-scaled phase difference measurements between pairs of receiver devices, and obtaining a result lattice of possible locations of the transmitter, one location more probable than the remainder. A method of geolocating a moving transmitter observed by a plurality of fixed or nearly fixed receiver devices, and a moving receiver device, includes obtaining wavelength-scaled phase difference measurements from the plurality of fixed or nearly fixed receiver devices to obtain a shape of the transmitter trajectory, measuring the phase difference between the moving receiver device and at least one of the plurality of fixed or nearly fixed receiver devices to obtain a phase error residual, and moving an estimated starting point of the transmitter to obtain a best-fit residual.

Classes IPC  ?

• G01S 5/04 - Position de source déterminée par plusieurs radiogoniomètres espacés

Abrégé

Systems and methods for on-the-fly characterization of an arbitrary array of antenna elements are provided. An array of arbitrary antenna elements and a reference receiver is provided. A location for a target source of signals is provided or assumed. Cross ambiguity functions are computed between the signal received by the reference receiver and the signal received by each antenna element. The cross ambiguity functions are analyzed to determine the phase and amplitude response of the antenna array to signals originating from the location of the target source of signals.

Classes IPC  ?

• H04B 7/00 - Systèmes de transmission radio, c.-à-d. utilisant un champ de rayonnement

Abrégé

A method of geolocating a stationary transmitter observed by a fixed receiver device and at least two receiver devices, at least one of the receiver devices moving includes obtaining wavelength-scaled phase difference measurements between pairs of receiver devices, and obtaining a result lattice of possible locations of the transmitter, one location more probable than the remainder. A method of geolocating a moving transmitter observed by a plurality of fixed or nearly fixed receiver devices, and a moving receiver device, includes obtaining wavelength-scaled phase difference measurements from the plurality of fixed or nearly fixed receiver devices to obtain a shape of the transmitter trajectory, measuring the phase difference between the moving receiver device and at least one of the plurality of fixed or nearly fixed receiver devices to obtain a phase error residual, and moving an estimated starting point of the transmitter to obtain a best-fit residual.

Classes IPC  ?

• G01S 5/04 - Position de source déterminée par plusieurs radiogoniomètres espacés
• G01S 1/18 - Systèmes de guidage en élévation, p. ex. système pour définir l'alignement de descente d'un avion

Abrégé

Systems and methods of correlating potential transmitters with received radio signals is provided. Image data is provided including paths traveled by potential transmitter. Potential transmitters are identified within the image data along with path segments traveled by potential transmitters. A first and second transmitter calculate certain parameters of received signals assuming that signals originated along the path segments. The calculated signal parameters are then compared to measured signal parameter to determine whether a transmitter is associated with a particular path.

Classes IPC  ?

• G01S 3/16 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée utilisant une comparaison d'amplitude de signaux provenant successivement d'antennes ou de systèmes d'antennes réceptrices ayant des caractéristiques de directivité différemment orientées ou d'un système d'antenne ayant une caractéristique de directivité à orientation variant périodiquement
• G01S 3/28 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée utilisant la comparaison d'amplitude de signaux provenant simultanément d'antennes ou de systèmes d'antennes réceptrices ayant des caractéristiques de directivité orientées différemment

Abrégé

An antennal arrangement for radio signals includes two loop antennas. Each of the antennas is provided with a capacitor. The antennas are separated from one another by a gap and are coupled to each other by a conductor.

Classes IPC  ?

• H01Q 9/00 - Antennes électriquement courtes dont les dimensions ne sont pas supérieures à deux fois la longueur d'onde et constituées par des éléments rayonnants conducteurs actifs

Produits et services

computer software for digital-signal processing, namely, an object-oriented program that permits the systematic reuse of existing, tested components with new, user-written components in problem areas of digital-signal processing, such as signal processing, data display, networking, graphical user interface design, and hardware control

Produits et services

computer software for digital-signal processing, namely, an object-oriented program that permits the systematic reuse of existing, tested components with new, user-written components in problem areas of digital-signal processing, such as signal processing, data display, networking, graphical user interface design, and hardware control