|
Match
|
Document |
Document Title |
|
|
7576688 |
Method and arrangement for detecting moving objects with a radar
Moving objects are detected with a radar by collecting samples of a received signal over an integration period. The terms of a match function contain a product of a sample of said received signal...
|
|
|
7570202 |
Polarimetric selectivity method for suppressing cross-track clutter in sounding radars
Methods for suppressing cross-track clutter in a sounding radar utilize polarimetric selectivity in two ways: (1) transmitting full-beam circular polarization and separating the desired signal of...
|
|
|
7535410 |
Weight calculation method, weight calculation device, adaptive array antenna, and radar device
A weight calculation method begins by storing a target reflection signal of a radar pulse received via an antenna in cells corresponding to positions along with a reception timing for a plurality...
|
|
|
7522089 |
Airborne look-down doppler radar tracking of hovering helicopters using rotor features
A system and method is presented for detecting and classifying slow-moving and hovering helicopters from a missile's look-down Doppler radar that is compatible with the existing base of Doppler...
|
|
|
7456780 |
Method and system for developing and using an image reconstruction algorithm for detecting and imaging moving targets
Image reconstruction approaches that use standard Cartesian-sampled, frequency-domain SAR data, which can be collected by a platform with a single radar antenna, together with its associated...
|
|
|
7439906 |
Doppler-compensated radar pulse compression processing system and method
A radar receiver system includes a receiver, a processor including a Doppler Compensated Adaptive Pulse Compressor (DCAPC) algorithm, possible other intermediate processing and a target detector....
|
|
|
7379017 |
Micro movement pulsed radar system and method of phase noise compensation
A pulsed radar system uses phase noise compensation to reduce phase noise due to drift of the reference oscillator to enable detection of micro movements and particularly human motion such as...
|
|
|
7375679 |
Reduced state estimation with biased and out-of-sequence measurements from multiple sensors
This invention relates to state estimation after processing time-delayed measurements with unknown biases that may vary arbitrarily in time within known physical bounds. These biased measurements...
|
|
|
7362257 |
Wideband interference cancellation using DSP algorithms
A method and system is provided for detecting and characterizing pulsed threat radar emitters through heavy in-band interference. System includes an advanced digital signal processing method...
|
|
|
7345625 |
Radar polarization calibration and correction
A polarimetric radar system transmits a signal which is nominally the desired polarization, but which may deviate therefrom. A calibration operation is performed using a symmetrical radar...
|
|
|
7336218 |
Radar system with peak frequency analysis and window functions
A radar system in which a beat signal is generated by transmitting a transmission signal that is subjected to frequency modulation into a triangular wave and receiving a reflection signal from a...
|
|
|
7333049 |
Waveform ambiguity optimization for bistatic radar operation
A radar transmitter is at a first location on a moving platform and illuminates a target with a sequence of frequency modulated radar pulses. The frequency modulated pulses are linear frequency...
|
|
|
7333046 |
System and method for monitoring targets
A system comprising a moving radar, a processing device, and a phase difference determination device is used to monitor a target. The moving radar has first and second phase centers that transmit...
|
|
|
7327307 |
Radar system with adaptive waveform processing and methods for adaptively controlling the shape of a radar ambiguity function
An adaptive waveform radar system transmits a selected waveform of a family of related waveforms and either phase shifts or bit shifts the radar return signal for correlating with the other...
|
|
|
7327305 |
Process for the evaluation of signals in an SAR/MTI pulsed radar system
The invention relates to a process for the evaluating a received signal of an SAR/MTI pulsed radar system that transmits SAR and MTI pulses with respective definable pulse repetition frequency...
|
|
|
7298316 |
Apparatus and method for instantly automatic detecting clutter blocks and interference source and for dynamically establishing clutter map
An apparatus for detecting clutter blocks and an interference source for dynamically establishing a clutter map includes a clutter block detecting module accumulates a plurality of range cell data...
|
|
|
7298315 |
Radar pulse compression repair
A radar pulse compression repair (RPCR) system includes a receiver for receiving a radar return signal, a matched filter for applying matched filtering to the radar return signal to generate a...
|
|
|
7295145 |
Selective-sampling receiver
A receiver that selectively samples a received signal in order to suppress an interference component of the signal while recovering a desired component. The selective sampling may be accomplished...
|
|
|
7286079 |
Method and apparatus for detecting slow-moving targets in high-resolution sea clutter
An apparatus for non-coherently detecting slow-moving targets in high resolution sea clutter includes a binary detector for converting high resolution radar returns, produced in response to a radar...
|
|
|
7259714 |
Unique space time adaptive system (USS)
A method of detecting radar returns and measuring their parameters with or without clutter present and no clutter cancellation employed which includes transmitting at least one pulse; processing...
|
|
|
7250900 |
System and method for sidelobe reduction using detect-and-subtract techniques
A radar system and method for detecting targets using pulse-compressed signals is disclosed. In one application, the systems and methods can be used to detect one or more relatively small targets...
|
|
|
7236790 |
Distributed radar detection for WLAN
A base station that monitors for radar signals may reassign the monitoring operation to one or more wireless mobile devices whenever channel load exceeds a first value. The one or more wireless...
|
|
|
7236124 |
Radar system and method for reducing clutter in a high-clutter environment
A radar system transmits an environment-sensing pulse and processing circuitry time-reverses an order of radar return samples and generates a convolution matrix from the radar return samples...
|
|
|
7221307 |
Determination of the presence of closely spaced targets
An active or passive sensor observes a region, and generates evidence of the type of target or object viewed. The evidence is processed to determine the prior probability that the object is of a...
|
|
|
7212150 |
Doppler-sensitive adaptive coherence estimate detector methods
A method is provided for detecting a target signal of a specific known form in the presence of clutter. The method includes dividing a set of initial training data, derived from returns from a...
|
|
|
7180443 |
Reduced state estimator for systems with physically bounded parameters
State estimation of a system having multidimensional parameters, which are unknown, arbitrarily time-varying, but bounded, in addition to state variables, is performed by initializing the state...
|
|
|
7167726 |
Multi-mode antenna system for a computing device and method of operation
An antenna system for a computing device operable in multiple communication modes.
|
|
|
7167127 |
Process for tracking vehicles
The invention is process for tracking a moving targeted vehicle from a remote sensor platform comprising the steps of 1) tracking the targeted vehicle and periodically recording its radar signature...
|
|
|
7161529 |
Dual forward scattering method for modeling multipath propagation
Analysis of electromagnetic (or acoustic) multipath propagation inventively focuses upon the transmitter-to-target propagation (transmitted propagation reaching target via both direct pathway and...
|
|
|
7154434 |
Anti-personnel airborne radar application
An anti-personnel airborne radar application for ultra slow target tracking is provided. The anti-personnel airborne radar application includes a rotorcraft and a signal processing system. The...
|
|
|
7145498 |
Efficient autofocus method for swath SAR
A moving radar generates a search mode synthetic aperture image of a patch from periodic pulse returns reflected from the patch. The patch is imaged from radar returns derived from two or more...
|
|
|
7132975 |
Apparatus and method for detecting moving objects
An ultra wideband radar system for detecting moving objects comprising an antenna, which may be scanned in at least one dimension, and a signal processor wherein the signal processor includes a...
|
|
|
7095358 |
Technique for cancellation of elevated clutter for the detection of fixed and ground moving targets under trees
A target is detected under a forest canopy or other elevated clutter where the target is obscured by the elevated clutter. Radar returns reflected from the target on the surface, combined with...
|
|
|
7081849 |
Process for sensor resources management
The subject process accepts the data from a kinematic tracker and maps them to fuzzy set conditions. Then using a multitude of defined membership functions and fuzzy logic gates, generates sensor...
|
|
|
7064704 |
Apparatus for radar
A radar transmits electromagnetic energy in pulse repetition intervals and receives reflections from objects in range gates including Doppler filters. The radar approves desirable ambiguous echoes...
|
|
|
7038617 |
Sensor doppler/wavelet processing
A method according to an aspect of the invention is for filtering coherent multipulse radar, sonar or lidar returns. The method comprises the steps of separating the returns into mutually...
|
|
|
7030808 |
Nonlinear target recognition
Nonlinear target detection for the detection of extremely weak signals when buried in very high levels of noise is performed with improvement of the quality of the signals received in the data by...
|
|
|
7026981 |
Surface interaction region methodology for delimiting multipath propagation inquiry
Analysis of electromagnetic (or acoustic) multipath propagation inventively confines the assessment of multipath propagation to a “surface interactive region” (“SIR”), intermediate the...
|
|
|
6999025 |
Clutter rejection in a passive radar receiver of OFDM signals with antenna array
The invention concerns a passive radar receiver with an array of antennas for a OFDM received signal comprising frames of symbols each emitted on coded orthogonal carriers. After formatting...
|
|
|
6982668 |
Tangential velocity measurement using interferometric MTI radar
Radar systems use time delay measurements between a transmitted signal and its echo to calculate range to a target. Ranges that change with time cause a Doppler offset in phase and frequency of the...
|
|
|
6975264 |
Signal separating system
A signal separating system 1 comprises a frequency conversion element 3 , a dynamic filter component 4 with associated coherent stop slot and non-coherent passband, optionally a signal wave...
|
|
|
6967617 |
Polarization correlation signal processing for radiometers, ladars, and radars
A correlating polarimeter is provided for correlating a received waveform of a wideband electromagnetic signal with a predetermined waveform. The correlating polarimeter may include a first antenna...
|
|
|
6952178 |
Method of detecting moving objects and estimating their velocity and position in SAR images
A method of detecting moving objects and of estimating their velocity and position in SAR images includes the steps of generating a sequence of single-look SAR images which have the same...
|
|
|
6873287 |
Signal processing arrangement
The present invention relates to a method and an arrangement suitable for embedded signal processing, comprising a number of computational units ( 100 ), each computational unit comprising a number...
|
|
|
6870502 |
Advanced asynchronous pulse detector
An asynchronous pulse detector including a data estimator which estimates the return signal based on the corrected return signal, a detector for detecting an asynchronous pulse in the return...
|
|
|
6867730 |
Method of interference suppression in a radar device and a radar device
A radar device and a method of suppressing interference in a radar device in which signals are transmitted with a carrier frequency, and the signals are transmitted as pulsed signals with a pulse...
|
|
|
6833808 |
Signal processing
A method and apparatus for processing of a signal in which a variation in phase between a transmitted and reflected pulse is modeled, as is the amplitude of the pulse. The modeled phase and...
|
|
|
6803876 |
Irregular PRT deconvolution method and systems, and its uses
This invention relates to radar signal processing. In particular, this invention concerns Doppler processing and clutter filtering on irregular Pulse Repetition Time (PRT) sampled signal. This...
|
|
|
6731233 |
Method of suppressing jammer signals
In a method of suppressing jammer signals in the received signal of radar antennas of HPRF applications (such as pulse Doppler radar systems) by means of Fast Fourier Transformation and side lobe...
|
|
|
6725172 |
Systems and methods for tagging measurement values
Systems and methods for measuring a characteristic of an analog signal are provided. A system for measuring a characteristic of an analog signal includes an analog to digital converter that is...
|