A method for radar signal processing separates an electric signal generated by Doppler processors of a radar into alternating current (AC) magnitudes with Doppler frequencies corresponding to absolute values between 0.1 and 4 Hz and direct current (DC) magnitudes with no Doppler frequency. An AC line and a DC line are generated, based on the AC magnitudes and the DC magnitudes, respectively, by adding respective energies across Doppler cells for each range cell and subsequently applying CFAR detector algorithm respectively. An energy level difference between an energy spike in the AC line and another energy spike in the DC line is calculated and compared with a threshold set for detecting a breathing target that is stationary. If the energy level difference is greater than the threshold, the breathing target that is stationary is detected and reported to the radar operator.
G01S 13/56 - Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
3.
Radar apparatus and methods for determining the presence of a reflective target using a multiple response comparison
A method of processing radar responses of a radar system characterized by a plurality of beam patterns, to determine if a given response corresponds to a reflective object. The method including, for a first beam pattern, identifying a response at an identified angle relative to a center of the first beam pattern. Then, for a second beam pattern overlapping the first beam pattern, determining if a measured response in the second beam pattern at an angle relative to the center of the second beam pattern that corresponds to the identified angle relative to the center of the first beam pattern is within a predetermined error threshold of an anticipated response calculated using the second beam pattern and the first beam pattern. If the measured response in the second beam pattern is not within the predetermined error threshold, the first response is eliminated from display and/or further tracking.
G01S 13/04 - Systems determining presence of a target
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
09 - Scientific and electric apparatus and instruments
Goods & Services
A heterogeneous real-time compute framework consisting of downloadable and recorded firmware and software to enable user-created signal processing, artificial intelligence (AI), machine learning (ML) and data transformation programs or applications to run faster at an accelerated speed through just-in-time resource management of compute intensive tasks across a diverse set of processors
A monopole antenna, comprising: a radiating element, wherein the radiating element has a first curved outer surface that is rotationally symmetric about a longitudinal axis extending through the monopole antenna, wherein a first diameter at a first end of the radiating element is less than a second diameter at a second end of the radiating element; and a ground plane disposed opposite the radiating element such that an electric field is generated by the radiating element with a ground plane providing the counterpoise, wherein the ground plane has a second curved outer surface that is rotationally symmetric about the longitudinal axis, wherein a first diameter at a first end of the ground plane is less than a second at a second end of the ground plane, wherein the first end of the radiating element is disposed adjacent the first end of the ground plane.
A discrete-time, digital filter for notch filtering a complex digital signal, the filter having a transfer function allowing selective filtering of complex signal components. A system for receiving a modulated signal, the system including a processor for adaptively generating filter coefficients of a discrete-time, digital filter, for filtering a complex discrete-time signal, the processor configured to (i.) identify a number of signal samples in a discrete-time signal, and use the signal samples to calculate autocorrelation values sufficient to calculate the filter coefficients, (ii.) solve a system of equations, the system of equations defined by a Toeplitz matrix and a vector to determine the coefficient values, the Toeplitz matrix defined using the autocorrelation values, and the vector defined as the autocorrelation values of a white noise signal.
An airborne radar system and signal interpretation approach that detects slow moving ground targets using angle and Doppler of Keystone formatting process, and is referred to as Angle-Doppler Keystone Formatting (ADK). ADK collapses the clutter ridge to a constant Doppler or to a constant angle, thereby transforming a clutter ridge in angle-Doppler space into a horizontal line of constant Doppler or a vertical line of constant angle. Clutter may then be filtered more effectively, such as by using multiple beams as the source of STAP training data or by using multiple Doppler bins.
G01S 13/524 - Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
G01S 13/58 - Velocity or trajectory determination systemsSense-of-movement determination systems
G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
An antenna array includes a first ground plane; a second ground plane disposed below the first ground plane; a folded monopole antenna disposed between the first ground plane and the second ground plane, the folded monopole antenna comprising a driven arm, a parasitic arm, and a short connecting the driven arm to the parasitic arm; an antenna disposed above the first ground plane; and a feedline in electrical communication with the antenna such that an electrical signal input to the feedline drives the antenna, wherein the feedline extends through a cavity formed within the parasitic arm of the folded monopole antenna.
H01Q 9/42 - Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
A method for calibrating a phased array including an antenna array comprising a plurality of antenna elements, comprising the steps: measuring with a probe a first antenna element pattern of a first antenna element of the plurality of antenna elements; performing a spherical near-field to far-field transformation of the first antenna element pattern; transforming the far-field first antenna element pattern to a plane-wave spectrum; back transforming the plane-wave far-field first antenna element pattern to a reference point within the near-field of the antenna array; normalizing the first antenna element pattern according to, at least, the value at the phase center of the plane-wave near-field first antenna element pattern; and calibrating the first antenna element based, at least in the part, on the normalized first antenna element pattern.
G01S 13/66 - Radar-tracking systemsAnalogous systems
H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
A radar system includes an antenna array including a plurality of antenna elements; and a transmitter portion coupled to the antenna array, the transmitter portion being configured to sequentially transmit a first transmit beam and a second transmit beam from a single pulse, the first transmit beam and second transmit beam being formed using the same aperture of the antenna array, wherein a skew angle of the first transmit beam is distinct from a skew angle of the second beam. Such radar system alternatively transmitting through subarrays and receiving each via the entire array and combining the signals such that the transmit and receive parts of one of two 2-way beams point in the same direction and the transmit and receive parts of the second 2-way beam point in the same direction and these directions are within a standard beamwidth of each other.
H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
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
G01S 13/42 - Simultaneous measurement of distance and other coordinates
11.
System and method for tuning transistor-based non-foster negative impedance circuits for low-frequency antennas
A system and method for tuning a transistor-based circuit. The system includes a negative impedance converter circuit having a capacitor, a first transistor, and a second transistor. As a current travels through the capacitor, the first transistor and the second transistor each sample voltage at the capacitor and invert the voltage at an input of the negative impedance converter circuit. The negative impedance converter circuit also has a third transistor in series with the capacitor. The third transistor has a base voltage. Changing the base voltage of the third transistor changes the voltage sampled by the first transistor and the second transistor.
H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
09 - Scientific and electric apparatus and instruments
Goods & Services
Advanced electronic warfare (EW) technology suite consisting of open-architecture, software-defined systems comprised of computer hardware with significant signal processing power and multiple input/output (I/O) interfaces with embedded operating system software for enabling threat emulation, identification and electronic attack onboard manned and unmanned platforms; all of the foregoing goods are customizable through the integration of commercial, government and proprietary cards to provide desired capabilities
A radar system, comprising: a receive antenna configured to receive a receive signal reflected from a bullet, the receive signal exhibiting a Doppler shift according to the motion of the bullet; and a detector implementing a set of matched filters each configured to determine a measure of correlation between the Doppler shift of the receive signal and one of a set of pre-stored Doppler shifts, wherein each of the pre-stored Doppler shifts respectively represents the Doppler shift of a bullet passing the antenna at a different speed or a distance of a point of closest approach.
An accessory for tethering a cap for a SMA/SMP bulkhead to a device assembly without having to introduce elements that could compromise the integrity of the device assembly. The accessory includes a first portion that engages the SMA/SMP bulkhead and securely interconnects thereto, and a second portion that includes an opening where a tether chain is physically interconnected thereto. The tether chain includes the cap for the SMA/SMP bulkhead secured to the second end thereof.
09 - Scientific and electric apparatus and instruments
Goods & Services
Advanced electronic warfare (EW) technology suite consisting of phased array antenna and small form-factor low-SWaP hardware with embedded software, all for enabling threat emulation, identification and electronic attack onboard manned and unmanned platforms
A new way of beamforming in a phased array through use of a compression algorithm. The compression algorithm provides a beamforming technique that requires less memory, computes beams faster, and can be done without losing information as compared to prior art beamforming methods.
H01Q 3/00 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
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
17.
Data management and bootstrapping processing for machine learning and classification development
A system for developing machine learning for use in the radiofrequency domain that produces a robust set of training data for machine learning from a small set of labelled training data that is bootstrapped with unlabeled electromagnetic environment data. A raw signal set is prepared from the labeled data and separately processed for any electromagnetic environment and interference signals as well as for a primary signal by applying the real electromagnetic environment data and then summed to generate a second data set that is larger than the first data set. Feature extraction is used to produce a bootstrapped labelled data set that is larger than the original labelled data set and that can be used as training data for machine language classification.
42 - Scientific, technological and industrial services, research and design
Goods & Services
Software as a service (SAAS) services featuring software for creating and managing automated tests, and generating artifacts targeted towards government oversight of a verification and validation program for computer science and technology activities
19.
Method and apparatus for adaptively filtering radar clutter
A method of processing a radar hit from an object using, for each of a plurality of cells, a signal strength threshold, a hit rate threshold, a time of last detection; and receiving, for one of the plurality of cells corresponding to the object, a measured signal strength, a measured hit rate and a time of measurement. The object is identified as clutter if the measured hit rate is greater than the hit rate threshold, and the measured signal strength is less than signal strength threshold. The signal strength threshold is above a conventional CFAR signal threshold. Measured Doppler strength may also be used to identify clutter. Identification can be determined using Doppler-polarity-specific data values. The hit rate and the mean Doppler speed of the one of the plurality of cells can be updated using a running average.
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
G01S 13/91 - Radar or analogous systems, specially adapted for specific applications for traffic control
Processing of MIMO radar data generated from overlapped MIMO arrays. The method of virtualizing (basebanding the MIMO phase centers) allows for processing without the need to omit content/information/energy from overlapped virtual elements.
09 - Scientific and electric apparatus and instruments
Goods & Services
Electronic systems, namely, an electronic warfare system consisting of computer hardware, recorded software and electronic transmitters and receivers for simulating military exercises and warfare with offensive and defensive electronic attacks, providing navigation and timing data, providing threat detection data, and facilitating tipping and cueing of sensors in the nature of detecting changes with high value warfare assets
09 - Scientific and electric apparatus and instruments
Goods & Services
Radar apparatus, namely, a direction finding unit for use in an electronic warfare system, namely, a counterunmanned aircraft system solution designed for critical defense and security applications
09 - Scientific and electric apparatus and instruments
Goods & Services
A lightweight, small form factor electronic device that performs counter-unmanned aircraft systems and other electronic warfare capabilities, namely, detects, tracks, classifies, identifies and disrupts low, slow and small unmanned airborne threats using radio frequency all contained within a backpack
A radar system located on an antenna array mounted on a moving carrier and including plurality of antenna elements; a transmitter portion coupled to the antenna and configured to transmit a plurality of transmit beams, each including a corresponding orthogonal transmit waveform of a plurality of orthogonal transmit waveforms, each of the plurality of transmit beams having a transmit phase center spatially located at a respective point along the antenna array, the transmitter portion being configured to transmit each transmit beam during at least a portion of a pulse repetition interval, wherein the transmitter portion is configured to shift the transmit phase center of each transmit beam for each pulse repetition interval to a respective point along the antenna array in a direction opposite the movement of the carrier, such that a speed of the respective transmit phase center of each beam remains is reduced.
G01S 13/524 - Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
G01S 13/72 - Radar-tracking systemsAnalogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
G01S 13/58 - Velocity or trajectory determination systemsSense-of-movement determination systems
G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
A method and system for restoring a GPS signal is provided. The method including the steps of receiving a target location, receiving location of visible satellites, calculating a transmit delay, calculating a Doppler offset, calculating a chipping offset, computing navigating data and PRN codes, formulating signals using the transmit delay, Doppler offset, chipping offset, navigation data and PRN codes, and transmitting the formulated signal.
G01S 19/27 - Acquisition or tracking of signals transmitted by the system creating, predicting or correcting ephemeris or almanac data within the receiver
G01S 19/11 - Cooperating elementsInteraction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters
An indirect passive radar method and system utilizing information obtained from a non-direct source and reflected signals from an object to be identified to determine information associated with the object to be identified, such as speed, location, shaped, distance and so forth.
G01S 3/46 - Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
G01S 13/46 - Indirect determination of position data
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
A spiral antenna, comprising a first arm and a second arm. The first arm and second arm are interlaced with each other. Each arm has a plurality of turns comprising an inner subset of circular turns, and an outer subset of turns, electrically coupled to the inner subset, having a shape with only four lines of symmetry. An array of such spiral antennas disposed a substrate that extends in a direction of a longitudinal axis and having a round cross section in a plan transverse to the longitudinal axis.
H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
H01Q 21/20 - Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along, or adjacent to, a curvilinear path
G01S 3/14 - Systems for determining direction or deviation from predetermined direction
H01Q 3/01 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the shape of the antenna or antenna system
H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
32.
METHOD FOR THE CONTINUOUS CALCULATION OF A CYBER SECURITY RISK INDEX
A method for assessing a cyber security risk, the method comprising the steps of: obtaining cyber security precursor information from a plurality of sources, wherein the cyber security precursor information can be obtained from one or more online or offline sources; normalizing the obtained cyber security precursor information to a common information model; generating, from the normalized cyber security precursor information, one or more events; producing, from the one or more generated events, one or more facts; calculating a plurality of risk indicators from the one or more facts; normalizing the plurality of risk indicators to a common model; calculating, using the normalized plurality of risk indicators, one or more cyber risk index component scores; and calculating, using the one or more cyber risk index component scores, a cyber risk indicator index.
Method and system for detecting and/or quantifying recent human presence in an environment using a calculated rate of decay of carbon dioxide concentration levels within that environment. A sensor measures the change in carbon dioxide levels over time to calculate the rate of decay to equilibrium and extrapolate recent human presence. Also provided is a method and system for quantifying recent human activity in an environment using the calculated rate of decay to equilibrium.
G01N 31/00 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
G01V 11/00 - Prospecting or detecting by methods combining techniques covered by two or more of main groups
34.
METHODS AND SYSTEMS FOR BIOMETIC IDENTIFICATION OF DAIRY OF ANIMALS USING VEIN PATTERN RECOGNITION
A method (200) for identifying a dairy animal, the method (200) comprising the steps of: providing an identification system (100) comprising an imaging device (20) and a database (42) of stored vein patterns; obtaining at least one image of at least a portion of an udder (12) of the dairy animal; extracting a vein pattern from the at least one image; comparing the extracted vein pattern to the database (42) of stored vein patterns; and identifying, based on said comparison, the dairy animal in the database (42) of stored vein patterns.
A method for identifying mastitis in a dairy animal, the method including the steps of: (i) identifying a dairy animal suspected of being affected by mastitis; (ii) collecting a sample of milk from the identified dairy animal; (iii) analyzing the sample for the presence of one or more mastitic bacteria; (iv) analyzing the sample for the presence of one or more mastitic pathogens; (v) identifying, if the presence of one or more mastitic bacteria is indicated, the mastitic bacteria in the sample; and (vi) determining, based on the identified mastitic bacteria in the sample, a management decision for the dairy animal.
Methods and systems for scalable high-performance embedded computing architectures. According to an embodiment, a scalable high-performance embedded computing system increases computational capability within the restrictive size, weight, and power constraints of systems such as the external pod payloads of unmanned aircraft systems, among many other possible systems. The core computer capability can be placed in various environments, and according to one embodiment utilizes a flight-certified aeronautics pod that is scalable in length. The scalable HPEC system can be connected to external data sources, or the nose and tail can be made of Radio Frequency transparent material, enabling the use of various RF sensing technologies within the same aeronautics enclosure. According to an embodiment, a lightweight, thermally-efficient conduction cooled chassis supports the required board and interface hardware.
A portable radar system (10) is disclosed including a mast (16), a fabric enclosure (12) being sized and dimensioned to be extendable in a covering relation with at least part of the mast; and an antenna comprising at least one element, wherein said antenna is arranged on the fabric enclosure and is positioned to illuminate or receive reflections from a target when the fabric enclosure is in a covering relation with the mast and the mast is deployed.
H01Q 1/27 - Adaptation for use in or on movable bodies
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H01Q 21/20 - Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along, or adjacent to, a curvilinear path
38.
Method, device, and system for aerosol detection of chemical and biological threats
Methods and systems for identifying an aerosolized agent. A method for identifying an aerosolized agent includes the steps of providing a sample potentially containing an aerosolized agent, concentrating the sample with an aerosol collector, analyzing the concentrated sample on a collection substrate using spectroscopy to produce an aerosolized agent analysis output, comparing the analysis output to a database of known agent analysis outputs; identifying the aerosolized agent based on the comparison; and alerting a user to the presence of an aerosolized agent in the sample.
The present invention is directed to an antenna system and a method that is configured to compute calibration element voltage gain patterns as functions of a digital antenna model and a plurality of complex beamformer voltages, determine calibration through path transfer functions from the plurality of complex voltages, and remove the calibration element voltage gain patterns from the calibration through path transfer functions to determine a beamforming network transfer function. The beamforming network transfer function and the far-field element voltage gain patterns are combined to obtain a system transfer function used to revise a calibration table.
An aerosol and vapor sampling device, comprising a particle focusing nozzle (12) comprising an elutriator column having an opening at a first end and an accelerator jet outlet (22) at a second end opposite said first end, wherein the particle focusing nozzle (12) is configured to admit a gas-aerosol sample at the opening and to vent the gas- aerosol sample at the jet outlet; a collection well (16), positioned to receive the gas-aerosol sample from the jet outlet (22), and comprising a backing (20) and a sidewall (18), wherein at least a portion of the backing (20) is porous such that at least part of the received gas-aerosol sample may flow through the porous portion of the backing (20).
The present invention is directed to a ground moving target (GMTI) radar that can detect targets, including dismounts, with very small minimum detectable velocities by combining signals from antennas on different spatially separated platforms in a main beam clutter-suppressing spatially adaptive process without requiring that the relative positions of the antenna phase centers be accurately tracked. The clutter nulling is in addition to that provided by the Doppler filters. The spatial displacement provides a narrow main beam clutter null reducing undesired target suppression. The clutter-suppressing spatially adaptive structure is used in both the sum and delta channels of the monopulse processor so that the beam distortion caused by the spatial nulling is compensated for, and the monopulse look-up process is preserved to maintain angle accuracy. Noncoherent integration is employed to recover signal to noise loss resulting from the uncertain relative locations of the platforms.
G01S 13/524 - Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
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
A system and method for mitigating multipath propagation are disclosed herein. The method may include collecting a plurality of detections of a target, forming a plurality of models each assuming at least one parameter causing multipath propagation, determining which model best fits the detections of the target, using the best fit model to approximate the ground conditions, and using the approximated ground conditions to remove the multipath error from the observed signals.
A system and method for phased-array radar that is capable of accurate phase-only steering at any unambiguous angle is provided. In various embodiments, system and method that compensates for the varying effective element spacing of phased array radar, which occurs as a result of transmitting a wideband signal with phase shifters operating at a fixed phase, by interpolating and resampling across all elements, per frequency, to generate a desired effective spacing between the elements.
G01S 13/02 - Systems using reflection of radio waves, e.g. primary radar systemsAnalogous systems
G01S 13/42 - Simultaneous measurement of distance and other coordinates
H04B 7/0408 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
09 - Scientific and electric apparatus and instruments
Goods & Services
A high speed, embedded computing system consisting primarily of computer hardware and computer software designed for airborne pods that perform real-time data processing for military applications
A method and system for restoring a GPS signal is provided. The method including the steps of receiving a target location, receiving location of visible satellites, calculating a transmit delay, calculating a Doppler offset, calculating a chipping offset, computing navigating data and PRN codes, formulating signals using the transmit delay, Doppler offset, chipping offset, navigation data and PRN codes, and transmitting the formulated signal.
G01S 19/11 - Cooperating elementsInteraction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters
G01S 19/27 - Acquisition or tracking of signals transmitted by the system creating, predicting or correcting ephemeris or almanac data within the receiver
Methods and systems for identifying an aerosolized agent. A method for identifying an aerosolized agent includes the steps of providing a sample potentially containing an aerosolized agent, concentrating the sample with an aerosol collector, analyzing the concentrated sample on a collection substrate using spectroscopy to produce an aerosolized agent analysis output, comparing the analysis output to a database of known agent analysis outputs; identifying the aerosolized agent based on the comparison; and alerting a user to the presence of an aerosolized agent in the sample.
Methods and systems for identifying an aerosolized agent. A method for identifying an aerosolized agent includes the steps of providing a sample potentially containing an aerosolized agent, concentrating the sample with an aerosol collector, analyzing the concentrated sample on a collection substrate using spectroscopy to produce an aerosolized agent analysis output, comparing the analysis output to a database of known agent analysis outputs; identifying the aerosolized agent based on the comparison; and alerting a user to the presence of an aerosolized agent in the sample.
The present invention is directed to a system and method for providing an estimated design specification as a function of a number of spatially separated far-field measurements and a predetermined design specification. The predetermined design specification corresponds to an antenna being in a properly configured and a properly excited state. The system maps the spatially separated far-field measurements into an estimated far-field antenna pattern of the antenna based on the estimated design specification. The system provides difference data based on a comparison of the predetermined design specification and the estimated design specification and can adjust the electrical excitation signals of the antenna in accordance with the difference data or the estimated far-field antenna pattern.
H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
The present invention relates to methods and systems for electronic countermeasures, and particularly to methods and systems for electronic countermeasures that employ radar jamming devices.
A method for the simultaneous multi-frequency signal processing within a single receiver is presented. The pulse compression or filtering method samples the received signal at a data rate commensurate with the maximum frequency separation of waveforms at separate frequencies being received, but the compression calculations are only performed at a rate commensurate with the bandwidth of each individual transmit waveform set. The method reduces the processor requirements for extracting all available information from these signals.
G01S 13/28 - Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
G01S 13/58 - Velocity or trajectory determination systemsSense-of-movement determination systems
G01S 13/32 - Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
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
52.
Multiplatform GMTI radar with enhanced SNR, monopulse
The present invention is directed to a ground moving target (GMTI) radar that can detect targets, including dismounts, with very small minimum detectable velocities by combining signals from antennas on different spatially separated platforms in a main beam clutter-suppressing spatially adaptive process without requiring that the relative positions of the antenna phase centers be accurately tracked. The clutter nulling is in addition to that provided by the Doppler filters. The spatial displacement provides a narrow mainbeam clutter null reducing undesired target suppression. The clutter-suppressing spatially adaptive structure is used in both the sum and delta channels of the monopulse processor so that the beam distortion caused by the spatial nulling is compensated for, and the monopulse look-up process is preserved to maintain angle accuracy. Noncoherent integration is employed to recover signal to noise loss resulting from the uncertain relative locations of the platforms.
G01S 13/44 - Monopulse radar, i.e. simultaneous lobing
G01S 13/524 - Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
G01S 13/87 - Combinations of radar systems, e.g. primary radar and secondary radar
G01S 7/00 - Details of systems according to groups , ,
The present invention relates to a method and system for identifying and eliminating second time-around ambiguous targets and, more particularly, to a method and system for identifying and eliminating second time-around ambiguous targets using waveform phase modulation.
G01S 13/20 - Systems for measuring distance only using transmission of interrupted, pulse modulated waves whereby multiple time-around echos are used or eliminated
G01S 13/28 - Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
G01S 13/58 - Velocity or trajectory determination systemsSense-of-movement determination systems
54.
Methods and systems for local principal axis rotation angle transform
A method for processing synthetic aperture radar (SAR) data. The method includes the step of receiving SAR data that has been collected to provide a representation of a target scene, and dividing the data into a plurality of sub-blocks each having a plurality of pixels, each of the plurality of pixels having a coordinate and an amplitude. A transformation performed on each of the sub-blocks includes the steps of: (i) computing a mean coordinate; (ii) subtracting the mean coordinate from the pixel's actual coordinate to arrive at a modified coordinate; (iii) multiplying the modified coordinate by the amplitude to arrive at an amplitude-modified coordinate; (iv) creating a covariance matrix using the amplitude-modified coordinates; (v) performing a singular value decomposition on the covariance matrix to arrive at a vector; and (vi) associating an angle with the calculated vector.
G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
A method for secured separation within a computer network. The method includes the step of: (i) providing a secure separation module between a low security computer network and a high security computer network; (ii) intercepting, by the secure separation module, any data directed from the low security computer network to the high security computer network; (iii) routing, by the secure separation module, the data to a first destination; (iv) authenticating the communication; (v) filtering the data using one or more filters; and (vi) communicating the data, only if it passes the one or more filters, to a destination computer network.
H04L 29/06 - Communication control; Communication processing characterised by a protocol
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
56.
Through wall sensing system using WiFi/cellular radar
o. The system may be operated on a pulsed or pseudo “half duplex” mode and have a transmit/receive pattern that is a function of the desired minimum stand-off distance.
G01S 13/88 - Radar or analogous systems, specially adapted for specific applications
57.
Ground moving target indicator (GMTI) radar that converts radar tracks to directed graphs (DG), and creates weighted DGs aligned with superimposed with digital maps
The present invention is directed to a system that includes a semantic reasoning engine that is configured to convert radar track data into a directed graph representation (DGR) of the predetermined surveillance region and iteratively combine the DGRs to create a weighted directed graph (WDG) aligned and superimposed with the digital map data. The WDG includes first WDG elements corresponding to moving objects detected by a radar system. The WDG is compared to historical data to obtain a surveillance detection parameter. An alarm message is generated if the surveillance detection parameter deviates from the historical data by a predetermined amount. An output device is coupled to the semantic reasoning engine and is configured to provide a representation of the digital map data, the WDG and the at least one alarm message.
G01S 7/00 - Details of systems according to groups , ,
G01S 13/72 - Radar-tracking systemsAnalogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
G01S 13/524 - Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
58.
Methods and systems for exploiting sensors of opportunity
A method for obtaining sensor data about a remote target using one or more pre-existing sensors located in the vicinity of the remote target. The method includes the steps of identifying a remote target of interest, identifying one or more pre-existing target systems with one or more sensors located in the vicinity of the remote target, instructing the identified sensors to obtain sensor data and transmit the data over a communications network without detection, receiving the transmitted sensor data, and analyzing the received sensor data to create information about the remote target.
Method and system for detecting and/or quantifying recent human presence in an environment using a calculated rate of decay of carbon dioxide concentration levels within that environment. A sensor measures the change in carbon dioxide levels over time to calculate the rate of decay to equilibrium and extrapolate recent human presence. Also provided is a method and system for quantifying recent human activity in an environment using the calculated rate of decay to equilibrium.
A gravity gradiometer having at least three differential accelerometers with a low response to linear accelerations and at least six angular accelerometers that give it the capability of measuring angular rates by integrating the angular accelerations. Both types of accelerometers are based on a compliant mechanism with very low and adjustable stiffness that is achieved by using flexures under compressive load that contribute a negative stiffness to the total elastic response of the mechanism. Both types of accelerometers are operated in a servo-compensation feedback mode so that at no time is the mechanism far from its equilibrium position.
A device, method, and system for the detection of ribosome inactivating protein activity, including the ricin toxin, in a sample. According to one embodiment, the ribosome inactivating protein in the sample removes an adenine from a labeled DNA substrate to create an abasic site. An AP lyase can then cleave the DNA substrate at the abasic site, allowing the fluorophore located at or near one end of the DNA substrate and the quencher at or near the other end of the DNA substrate to spatially separate. Once the fluorophore and the quencher are sufficiently separated, the fluorophore will emit a fluorescence signal. Increasing fluorescence, indicating ribosome inactivating protein activity, will be monitored in real time using a detection system.
The present invention is directed to a method for use in a cognitive radio. A Fourier transform of a time domain signal is performed to obtain a series of frequency domain samples covering substantially the entire predetermined RF spectrum, the time domain signal corresponding to the RF waveform, each frequency domain sample being characterized by a predetermined waveform characteristic. The predetermined waveform characteristic of each frequency domain sample is evaluated in each subcarrier block to obtain a subcarrier block activity level for each subcarrier block. A subcarrier block is selected when its subcarrier block activity level is greater than a predetermined threshold.
A system and method for realistic speech synthesis which converts text into synthetic human speech with qualities appropriate to the context such as the language and dialect of the speaker, as well as expanding a speaker's phonetic inventory to produce more natural sounding speech.
G10L 13/08 - Text analysis or generation of parameters for speech synthesis out of text, e.g. grapheme to phoneme translation, prosody generation or stress or intonation determination
G10L 13/02 - Methods for producing synthetic speechSpeech synthesisers
64.
REPORTING AND SELF-DECONTAMINATING ARTICLES FOR INDIVIDUAL HAZARD DETECTION AND PROTECTION
Methods, systems, and devices for the self-detection and/or self-decontamination of chemical, biological, radiological, and/or nuclear hazards, threats, and contaminants. The self-detection system preferably uses aptamers functionalized to an electronic system to sense CBRN threats. The aptamers are functionalized directly to a conductive surface such as a noble metal coated fiber or other conductive fiber strand. The self-decontamination system is preferably in communication with the self-detection system and responds to the detection of a CBRN agent by switching to a decontamination state, such as becoming absorbent or releasing an anti-CBRN agent such that it can neutralize the threat. In a preferred embodiment, the system is worn by a user.
A system and method for voice and speech analysis which correlates a speaker signal source and a normalized signal comprising measurements of input acoustic data to a database of language, dialect, accent, and/or speaker attributes in order to create a transcription of the input acoustic data.
The present invention is directed to a system and method for extrapolating antenna radiation patterns from a small number of measurements. The present invention is configured to derive an initial estimate based on design information and compare the initial estimate to far- field measurements. The controller is configured to recursively obtain a final estimate wherein a difference between the far- field measurements and the final estimate is less than a predetermined amount. The final estimate represents an extrapolated mapping of the antenna pattern.
Methods and systems for plasmonically enhanced bionano antennas for tagging, tracking, and locating targets of interest at long distances in both day and nighttime conditions. The nanoantennas are used to tag a target of interest and emit a wavelength to impart a unique biometric signature. The nanoantennas are detectable by selectively harvesting and plasmonically enhancing incident light in the visible region, then upconverting that energy through an activated phosphor.
Filtration devices, methods, and systems comprising a decontamination filtration medium. The filtration medium comprises a remotely-triggered decontamination material stored in microcapsules that are embedded in or attached to a filter element. The microcapsules contain a decontamination agent that will detoxify one or more toxins, including but not limited to chemical and biological warfare agents, and industrial materials and chemicals, among other things. The microcapsules can be locally or remotely triggered to release the detoxifying agent by a triggering agent such as light, electrical potential, pressure, temperature, or other methods. One method of use of the filtration device comprises the following: when a target toxin is detected in the vicinity of the device, the microcapsules are actively triggered to release the detoxifying agent, thereby neutralizing the toxic agent.
A method, a system and a program product for deinterleaving and classifying an incoming unknown radar pulse pattern uses a library of state machines that mesh with a library of known radar pulse patterns of a library of known radar emitter sources. A continuous sequence of radar pulse descriptor words is secured for the incoming unknown radar pulse pattern and a plurality of state machines that may mesh with the continuous sequence of radar pulse descriptor words is selected from the library of state machines. The plurality of state machines that may mesh with the incoming unknown radar pulse pattern is operated upon the incoming unknown radar pulse pattern. Radar emitter sources that correlate with state machines that actually mesh with the incoming unknown radar pulse pattern are designated as radar emitter sources that comprise the incoming unknown radar pulse pattern.
A method, a system and a program product for deinterleaving and classifying an incoming unknown radar pulse pattern uses a library of state machines that mesh with a library of known radar pulse patterns of a library of known radar emitter sources. A continuous sequence of radar pulse descriptor words is secured for the incoming unknown radar pulse pattern and a plurality of state machines that may mesh with the continuous sequence of radar pulse descriptor words is selected from the library of state machines. The plurality of state machines that may mesh with the incoming unknown radar pulse pattern is operated upon the incoming unknown radar pulse pattern. Radar emitter sources that correlate with state machines that actually mesh with the incoming unknown radar pulse pattern are designated as radar emitter sources that comprise the incoming unknown radar pulse pattern.
A method, a system and a program product for deinterleaving and classifying an incoming unknown radar pulse pattern uses a library of state machines that mesh with a library of known radar pulse patterns of a library of known radar emitter sources. A continuous sequence of radar pulse descriptor words is secured for the incoming unknown radar pulse pattern and a plurality of state machines that may mesh with the continuous sequence of radar pulse descriptor words is selected from the library of state machines. The plurality of state machines that may mesh with the incoming unknown radar pulse pattern is operated upon the incoming unknown radar pulse pattern. Radar emitter sources that correlate with state machines that actually mesh with the incoming unknown radar pulse pattern are designated as radar emitter sources that comprise the incoming unknown radar pulse pattern.
A method, system and computer program product for calibrating and operating a radar apparatus provides for obtaining calibration response data from, for example, a radar cylinder and a plurality of radar columns, prior to assembling the radar cylinder and plurality of radar columns into an assembled radar apparatus. The calibration response data for the exemplary radar cylinder and the plurality of radar columns is evaluated to provide a simulated response of the assembled radar apparatus. Actual measured responses from the assembled radar apparatus may then be correlated with the simulated response through use of a look-up table. The particular method, system and program product for calibrating and operating the radar apparatus provides for avoidance of field calibration of the assembled radar apparatus, which is generally neither desirable nor feasible under hostile conditions.
An antenna architecture for hemispherically-scanning active electronically scanned arrays (AESA). The antenna architecture utilizes variable diameter disks of antenna elements configured in a conical implementation. The antenna elements are oriented such that the element boresight is normal to the surface of the conical structure. Beamforming takes place on each disk first, and them separately in combining the signals from each disk, thereby reducing complexity. The antenna optionally utilizes disks of antenna elements of the same diameter to form a cylindrical antenna, which when combined with a conical configuration create enhanced sectors while maintaining a hemispherical coverage capability. Further, use of two conical configurations can produce a fully spherical coverage capability.
An antenna architecture for hemispherically-scanning active electronically scanned arrays (AESA). The antenna architecture utilizes variable diameter disks of antenna elements configured in a conical implementation. The antenna elements are oriented such that the element boresight is normal to the surface of the conical structure. Beamforming takes place on each disk first, and them separately in combining the signals from each disk, thereby reducing complexity. The antenna optionally utilizes disks of antenna elements of the same diameter to form a cylindrical antenna, which when combined with a conical configuration create enhanced sectors while maintaining a hemispherical coverage capability. Further, use of two conical configurations can produce a fully spherical coverage capability.
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
H01Q 21/20 - Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along, or adjacent to, a curvilinear path
76.
Circuit board chassis and method including sidewall aperture and backplane insertion slots for side assembled backplane
A circuit board chassis and a method for assembling a backplane and a circuit board into the circuit board chassis include an aperture within at least one sidewall of the circuit board chassis. The backplane is inserted and assembled into the circuit board chassis through the aperture (that may include a counter-opposed pair of backplane insertion and assembly slots) in a first direction, and a circuit board is inserted and assembled into the circuit board chassis and the backplane in a second direction perpendicular to the first direction. By inserting and assembling the backplane into the aperture and slots, rather than assembling the backplane as an external surface component of the circuit board chassis, the embodiments provide for ease of replacement of the backplane and circuit board under space constrained limitations. The resulting embodiments also provide enhanced rigidity and enhanced thermal dissipation within the circuit board chassis.
An FFT algorithm that splits a large bit width waveform into two parts, making it possible to conduct the FFT with much lower logic resource consumption is disclosed. The waveform is split into its most significant bits and its least significant bits through division in the form of a bit shift. Each partial signal is then put through an FFT algorithm. The MSB FFT output is then right bit shifted. The two partial FFT's are summed to create a single output that is largely equivalent to an FFT of the original waveform. Rounding distortion is reduced by overlapping the MSB and LSB partial signals.
A method of using a discriminant analysis and Kalman filter cascade to improve the accuracy of point of origin solutions. Tracking information about a potential target is utilized by an initial discrimination function to classify the target as a projectile. Using that information, the output of a first Kalman filter is fed into an additional discrimination function to further classify the type or sub-class of the projectile. A second Kalman filter can employ type-specific information to obtain a point of origin solution with increased efficiency and accuracy.
G01S 7/42 - Diversity systems specially adapted for radar
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
79.
Interleaved beam coherent radar apparatus and processing method
A method for interleaved pulsed-Doppler processing. Radar energy management and associated processing techniques take advantage of spatial degrees of freedom available on modern, short range, wide angle, volume search ESA radar systems. The method creates an advantage in Doppler resolution when compared to currently utilized Doppler processing techniques. An Electronically Scanned Array (ESA) radar system includes one or more processors that may be programmed to read and execute instructional commands including transmit a plurality of synchronized, coherent pulsed transmit beams having substantially repeatable gain and phase pattern characteristics; electronically steer the plurality of transmit beams in a respective, sequential plurality of spatially diverse directions in a temporally-interleaved manner; sequentially collect a respective plurality of receive beams in a respective plurality of time vs. range buffers; determine a range-Doppler output at a selected, common receive position in each of the plurality of buffers.
The present invention is directed to a radar system that includes an antenna array having a plurality of antenna elements and a plurality of transmit antenna phase centers. A transmitter portion is configured to transmit a plurality of transmit beams characterized by a transmit beam pattern. The transmit beam pattern has a predetermined transmit beamwidth that is a function of the number of orthogonal transmit waveforms. The number of orthogonal transmit waveforms is less than the plurality of antenna elements. A receiver portion is also coupled to the antenna array and is configured to extract a plurality of orthogonal receive signal components from a received signal provided by the antenna array. A plurality of extracted orthogonal receive signal components are digitally beam formed to implement a virtual antenna array and generate a receive signal having a receive beamwidth.
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
81.
METHODS FOR MEASURING A PATINT RESPONSE UPON ADMINISTRATION OF A DRUG AND COMPOSITIONS THEREOF
Described herein are methods for effectively and accurately measuring a patient response upon administration of one or more drugs to the patient. The methods are more sensitive than current methodologies. Also described herein are compositions comprising an analgesic and a sufficient amount of an antihistamine to enhance the analgesic properties of the analgesic. With respect to these compositions, the methods described herein are useful for evaluating qualities of pain, definite improvement, and one or more bodily functions of a subject afflicted with pain. The compositions described herein are useful in improving the quality of pain in a subject or a bodily function of a subject afflicted with pain or definite improvement of a subject afflicted with pain.
The present invention is directed to a multi-channel signal processing system that includes a fast Fourier transform (FFT) module configured to perform an FFT using a first channel time domain sample as the in-phase component of a complex signal input, and by using the second channel time domain sample as a quadrature component of the complex signal input. The FFT module provides a complex signal spectrum. A channel processing module is coupled to the FFT module. The channel processing module is configured to extract a channel sample spectrum as a function of the complex signal spectrum. A channel equalization module is coupled to the channel processing module. The channel equalization module is configured to multiply the channel sample spectrum by a channel reference spectrum to obtain a correlated and equalized channel sample spectrum.
