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| Number | Title | Issue Date |
| 8125374 | Method of preventing false detections in sensors Described herein is a method of preventing false detections in sensors pulse-Doppler radar mounted on a moving platform. The method comprises filtering each received burst using Doppler filtering to split each received burst into at least a fast channel and one or m... | 02/28/2012 |
| 8013781 | Method and apparatus for radar surveillance and detection of sea targets In a radar system using a radar clutter map comprising a plurality of range-azimuth cells containing parameter data values indicative of time averaged echo returns for affecting alarm threshold levels at range-azimuth locations scanned by the radar system antenna, a... | 09/06/2011 |
| 7990309 | Constant false alarm rate adaptive radar control A method of analyzing return signals of successive range cells in a scene using constant false alarm rate adaptive control comprising, for each successive range cell in turn is disclosed mathematically. The return signal is processed mathematically and averaged over... | 08/02/2011 |
| 7741992 | Moving target detector for radar systems Various embodiments are described herein for a moving target detector that processes input data to perform detection for a current range cell. The moving target detector includes a Doppler filter bank module for processing the input data to provide several Doppler o... | 06/22/2010 |
| 7737881 | Signal processing system for pulse-doppler radar A signal processing system for use in pulse-Doppler radar, arranged to receive frequency domain signals for each of a plurality of Doppler bins for each range cell, comprising a data processor arranged successively to threshold each Doppler bin signal under test rel... | 06/15/2010 |
| 7642951 | Dual channel spatially adaptive CFAR A system for reducing CFAR loss due to sea clutter is disclosed. The system includes a first channel tuned for CFAR gain in a spatially correlated background and a second channel tuned for low CFAR loss in spatially uncorrelated backgrounds. Each of the channels emp... | 01/05/2010 |
| 7372394 | Variable loop gain and resolution pulse system and method with point target editing capability A weather radar system is coupled to antenna. The weather radar system includes a processor for generating pulses and for processing return pulses received by the antenna. The processor generates high resolution data from the return pulses. The processor uses the hi... | 05/13/2008 |
| 7369460 | Sonar scanner Detecting an object using sound waves includes outputting a sound wave from a transducer, receiving an echo after outputting the sound wave, obtaining a threshold value based on the echo and plural other echoes that are within a predetermined range of the echo, and ... | 05/06/2008 |
| 7336219 | System and method for generating a radar detection threshold A method for generating a radar detection threshold includes computing a first plurality of percentile values associated with frequency domain values of frequency domain signals. The first plurality of percentile values is used to generate detection threshold values... | 02/26/2008 |
| 7333047 | System and method for spatially diverse radar signal processing An ultra wideband radar system for detecting objects where at least one of the radar system or the object is moving. The radar may be scanned in at least one dimension, which may include angle or range. The system includes a scan combiner that combines scan informat... | 02/19/2008 |
| 7333052 | Signal processing with reduced combinational complexity Signal processing with reduced combinatorial complexity for tracking evolving phenomena such as radar tracks associated with weighted measurement parameters includes selecting a current phenomenon and obtaining a set of measurement parameters associated with it. Beg... | 02/19/2008 |
| 7321611 | Method and transceiver for full duplex communication of ultra wideband signals An impulse radio transceiver for full duplex ultrawide-band communications. The transceiver comprises an impulse radio transmitter that transmits impulse radio signal pulses, an impulse radio receiver that receives impulse radio signal pulses. Either or both of the ... | 01/22/2008 |
| 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 pulse scan of a plurality of identical pulses, into corresponding bi... | 10/23/2007 |
| 7259715 | Method for developing and using an image reconstruction algorithm for multipath scattering Described herein is an implementation of the IRAMS processing based upon a multi-delay-resolution framework applied to SAR image data measured at different aspect angles. The power of this new embodiment of IRAMS is that it produces a good separation of immediate re... | 08/21/2007 |
| 7260269 | Image recovery using thresholding and direct linear solvers An image recovery algorithm that recovers completely lost blocks in an image/video frame using spatial information surrounding these blocks. One application focuses on lost regions of pixels containing textures, edges and other image features that pose problems for ... | 08/21/2007 |
| 7257515 | Sliding window for alert generation A method for generating alerts from a periodically sampled system is disclosed. The method includes maintaining a sampling window having a predefined number of most-recently collected samples. The method further includes calculating an alert value, the alert value r... | 08/14/2007 |
| 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 whose pulse-compressed signals are masked by the time-sidelobes of a l... | 07/31/2007 |
| 7248207 | System and method for sidelobe reduction using point spread function expansion Systems and methods for detecting targets using pulse-compressed radar signals are disclosed. In one application, relatively small targets that are masked by the time-sidelobes of a larger target's return signal can be detected. The methods include a signal expansio... | 07/24/2007 |
| 7242344 | Radar apparatus and radar signal processing method A radar apparatus calculates distances or relative speeds of a target according to a plurality of formulae. An predicted distance calculation formula is obtained at the following observation from the distances or the relative speeds thus calculated. A determination ... | 07/10/2007 |
| 7218269 | Method for enlarging the interference-free dynamic range of non-linear signal processing components A method for enlarging the interference-free dynamic range of non-linear signal-processing components in receiver systems, in the conversion of input frequencies fin into output frequencies fout. According to the invention, at least one linear ... | 05/15/2007 |
| 7209523 | Ultra-wideband receiver and transmitter A waveform-adaptive ultra-wideband (UWB) transmitter and noise-tracking UWB receiver for use in communications, object detection and radar applications. In one embodiment, the output of an oscillator is gated by a low-level impulse generator either directly or throu... | 04/24/2007 |
| 7205929 | Radar system and vehicle controller incorporating radar system An electromagnetic wave is transmitted from a signal transmission antenna using a signal transmission IC; this electromagnetic wave is received, after having been reflected by a target object, by signal receiving antennas and signal receiving ICs; and the distance t... | 04/17/2007 |
| 7193557 | Random set-based cluster tracking Tracking objects by receiving a dataframe from a detection sensor device, the dataframe containing a timestamp and data corresponding to each detected object, generating new observation nodes for each detected object, propagating group track state parameters to obta... | 03/20/2007 |
| 7194684 | Method of spell-checking search queries A computer-implemented method for determining whether a target text-string is correctly spelled is provided. The target text-string is compared to a corpus to determine a set of contexts which each include an occurrence of the target text-string. Using heuristics, e... | 03/20/2007 |
| 7154433 | Method and device for the detection and track of targets in high clutter A method for discriminating and tracking a target in a clutter cloud includes transmitting a radar signal at a signal bandwidth to: identify a range extent of a clutter cloud; determine a centroid and a velocity growth rate of the clutter cloud; and identify a direc... | 12/26/2006 |
| 7145503 | Surface wave radar A surface wave radar system including a receive antenna array (20, 22) for generating receive signals, and a data processing system (24) for processing received data representing the receive signals to mitigate ionospheric clutter. The received data is... | 12/05/2006 |
| 7109915 | Radar apparatus In a radar apparatus for automobiles for transmitting a radio wave, receiving a radio wave reflected from an object and measuring a rate of the object, a digital signal processor has at least two operation modes, a normal operation mode and a low energy consumption ... | 09/19/2006 |
| 7100025 | Apparatus and method for performing single-instruction multiple-data instructions An apparatus and method for performing single-instruction multiple-data instructions using a single multiply-accumulate unit while minimizing operational latency. The multiply-accumulate unit generates a first half and a second half of a data result. A register stor... | 08/29/2006 |
| 7072618 | Adaptive threshold selection system and method for detection of a signal in the presence of interference A system and method for providing adaptive threshold selection for detecting a signal in the presence of interference or noise. The system and method thus enables a node, such as a mobile user terminal, in an ad-hoc communications network to reduce the number of fal... | 07/04/2006 |
| 7006553 | Analog signal separator for UWB versus narrowband signals A system, method, and computer program product for removing “narrowband” interference from a broader spectrum containing a UWB signal, in a receiver of the UWB signal. The RFI is extracted from a broader spectrum to remove interference from the UWB signal, by em... | 02/28/2006 |
| 6967612 | System and method for standoff detection of human carried explosives The system and method for standoff detection of human carried explosives (HCE) is a portable system that automatically detects HCE up to a range of 200 meters and within seconds alerts an operator to HCE threats. The system has radar only, or both radar and video se... | 11/22/2005 |
| 6954480 | Method and apparatus for improving received signal quality in an impulse radio system An impulse radio system includes an impulse transmitter that transmits a pulse train comprising a number of pulses that are positioned in time for conveying an information signal. An impulse receiver receives the pulse train in accordance with specified arrival time... | 10/11/2005 |
| 6937185 | Rain versus target discrimination for doppler radars A method of removing returns from rain in Doppler radar systems (and corresponding apparatus and computer software) comprising receiving a Doppler radar return signal, transforming the signal into a range versus frequency map, for a plurality of range cells, perform... | 08/30/2005 |
| 6903679 | Video amplifier for a radar receiver A video amplifier for a radar receiver includes a temperature compensating attenuator. The attenuator includes a temperature sensitive device, such as a thermistor, arranged in a voltage divider network and is coupled in cascade between two filter stages. Each of th... | 06/07/2005 |
| 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 of processing elements (20) capable of working independe... | 03/29/2005 |
| 6850186 | System for determining position and velocity of targets from signals scattered by the targets The present invention relates to a system for using signals scattered by targets to determine position and velocity for each of the targets and comprises a set of transmitters and receivers of electromagnetic or acoustic signals, said transmitters and receivers disp... | 02/01/2005 |
| 6844843 | Signal processing apparatus of radio radar A signal from CW radar is received, and the received power detected by the CW radar's swinging in all directions is averaged in each direction. Then, the maximum value and the minimum value of the received power are detected for each direction, and the difference be... | 01/18/2005 |
| 6822222 | Threat identification for mass spectrometer system A controller that processes the mass spectrum of a sample provided by a detector of a mass spectrometer, for example, by a field portable mass spectrometer system. The controller provides a constant false alarm rate (CFAR) processing of the mass spectral data receiv... | 11/23/2004 |
| 6816798 | Network-based method and system for analyzing and displaying reliability data A network-based method and system for analyzing and displaying reliability data from a user is provided. The method includes recording reliability data, obtaining unreliability plots, obtaining Weibull distribution parameters, creating control charts for those param... | 11/09/2004 |
| 6771209 | Automatic radar target detector The invention provides improved target detection and clutter rejection, and is applicable to pulse radars operating a mixed clutter and noise environment. It employs a signal amplitude expandor that functions in operative association with a constant false alarm rate... | 08/03/2004 |
