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US20130249730 INTERFERENCE MITIGATION IN THROUGH THE WALL RADAR  
This invention relates to sense through the wall radar. A main channel of a radar system (12) is operated at a frequency capable of penetrating opaque barriers such as the wall (24) of a building...
US20120154204 METHODS AND APPARATUS FOR SEA STATE MEASUREMENT VIA RADAR SEA CLUTTER ECCENTRICITY  
Methods and apparatus to fit the range extent of radar sea clutter to an ellipse to determine sea state. From one or more ellipse parameters, a sea state, which can include direction, can be...
US20150153446 Radar Clutter Suppression System  
Sidelobe suppression methods and systems for use in processing radar video streams generated by rotational radar antenna scanners. The sidelobe suppression methods function in parallel with...
US20120293361 RADAR CLUTTER SUPPRESSION SYSTEM  
Sidelobe suppression methods and systems for use in processing radar video streams generated by rotational radar antenna scanners. The sidelobe suppression methods function in parallel with...
US20150109165 Using Orthogonal Space Projections to Generate a Constant False Alarm Rate Control Parameter  
An adaptive parameter for adjusting a threshold in a sensor system that provides a constant false alarm rate is disclosed. A projection space generator performs projection operations to create a...
US20110063161 DUAL POLARIZATION RADAR APPARATUS AND INTERFERENCE JUDGMENT METHOD  
According to one embodiment, a dual polarization radar apparatus includes a received power calculation unit configured to calculate a horizontal polarization received power and a vertical...
US20110241931 ITERATIVE CLUTTER CALIBRATION WITH PHASED ARRAY ANTENNAS  
An iterative clutter calibration method comprises measuring an average of a sidelobe power in a range-Doppler image for a plurality of ranges. A determined value of an objective function is...
US20070210953 Aircraft collision sense and avoidance system and method  
A collision sense and avoidance system and method and an aircraft, such as an Unmanned Air Vehicle (UAV) and/or Remotely Piloted Vehicle (RPV), including the collision sense and avoidance system....
US20130257645 TARGET VISIBILITY ENHANCEMENT SYSTEM  
A method and apparatus (10) for enhancing target visibility comprises producing pulse returns in response to a sequence of received pulses. The pulse returns are processed to produce primary...
US20110291877 METHODS AND APPARATUS FOR NON-ISOTROPIC SEA CLUTTER MODELING  
Methods and apparatus to provide computing, using a processor, sea clutter threshold bias values as a function of range and azimuth, receiving a first shape corresponding to a first region of sea...
US20130181863 Antenna Sidelobe Reduction Using Phase Only Control  
A method for reducing sidelobe interference in a radar or communication system. The method includes selecting a desired amplitude weight (WD) to be applied to radar or communication antenna...
US20100214152 RADAR CABLE DETECTION SYSTEM  
Ground clutter is effectively separated from true signals echoed by a cable in the flight path of an aircraft, by encoding a transmitted pulse wave in a radar system with at least one transmit...
US20100176984 METHOD OF ELIMINATING GROUND ECHOES FOR A METEOROLOGICAL RADAR  
The present invention relates to a method of eliminating ground echoes for a meteorological radar. The ground echoes being received from a predetermined area by a radar, the radar illuminating,...
US20150168539 FMCW RADAR SYSTEM AND INTERFERENCE RECOGNITION METHOD FOR FMCW RADAR SYSTEMS  
An FMCW radar system is provided having a transceiver unit which is designed to transmit radar signals, which are modulated with the aid of at least one modulation parameter, and to receive radar...
US20130021196 FMCW RADAR SYSTEM AND INTERFERENCE RECOGNITION METHOD FOR FMCW RADAR SYSTEMS  
An FMCW radar system is provided having a transceiver unit which is designed to transmit radar signals, which are modulated with the aid of at least one modulation parameter, and to receive radar...
US20130033394 SYNTHETIC APERTURE RADAR CHIP LEVEL CROSS-RANGE STREAK DETECTOR  
A method of reducing cross-range streaking in a radar image includes determining a number of on-pixels in each line of at least a portion of the radar image, determining which lines have a...
US20130127656 RADAR FILTER  
A method of filtering radar return signals to discriminate between targets of interest and clutter is presented in which a filter filters radar return signals received by a first radar receiver,...
US20070152869 Multichannel processing of signals in a radar system  
A vehicle radar system includes a receive antenna system which concurrently provides signals from multiple receive beams to multiple channels of a multi-channel receiver. The multi-channel...
US20120068881 TARGET DETECTION FROM A SLOW MOVING RADAR PLATFORM  
The target detection from a slow moving radar platform technology includes a system. The system includes a radar power determination module configured to determine a clutter power based on radar...
US20070152874 Reducing undesirable coupling of signal(s) between two or more signal paths in a radar system  
In one aspect the invention is a method of reducing crosstalk in a radar system. The method includes receiving a reflected radar signal, down converting the reflected radar signal to an...
US20120242536 DOPPLER RADAR SYSTEM HAVING A HIGH PHASE NOISE TRANSMITTER  
Disclosed herein are systems and methods for using high phase noise oscillators in Doppler radar systems. In some embodiments, a transmit pulse is sampled corresponding with a transmission time,...
US20090237294 WEIGHT CALCULATION METHOD, WEIGHT CALCULATION DEVICE, ADAPTIVE ARRAY ANTENNA, AND RADAR DEVICE  
A received data storage situation is monitored, and a covariance matrix Ri of the i-th range cell is calculated to be temporarily stored. Covariance matrices Ri of the number of training samples...
US20120256778 Short-range vehicular radar system  
Short-range vehicular radar systems are described. In one implementation, an apparatus used in radar applications includes a programmable digital receiver having an adaptable interference filter...
US20070252753 Multifunction-RF-circuit  
A multifunction RF circuit on a single semiconductor chip. The multifunction RF circuit includes a power amplifier circuit, a mixer circuit forming an integral part of the power amplifier circuit...
US20090303109 METHOD FOR FILTERING SEA CLUTTER IN A RADAR ECHO USING A HYDROGRAPHIC MODEL  
There is disclosed a method for filtering sea clutter in a radar echo using a hydrographic model. The method comprises the steps of determining parameter values of the hydrographic model using the...
US20120105272 METHOD FOR FILTERING THE RADAR ECHOES PRODUCED BY WIND TURBINES  
In the field of the radar monitoring of airspace zones, and more particularly to the low altitude air surveillance of zones that are more or less densely populated with fixed objects comprising...
US20130169473 METHOD FOR FILTERING OF CLUTTER BY SCAN-TO-SCAN CORRELATION USING DOPPLER INFORMATION  
The present disclosure concerns a method for post-processing of radar data that uses information of Doppler speed as obtained by coherent processing of the input data, to reduce clutter due to...
US20130016002 METHOD OF DETECTING A CLUTTER RETURN AT A SENSOR  
There is disclosed a method for counteracting the effect which crags and other such environmental formations can have on radar returns or returns in similar sensor systems. In particular it has...
US20060238406 Low-cost, high-performance radar networks  
A real-time radar surveillance system comprises at least one land-based non-coherent radar sensor apparatus adapted for detecting maneuvering targets and targets of small or low radar...
US20090121918 RADAR APPARATUS ENABLING SIMPLIFIED SUPPRESSION OF INTERFERENCE SIGNAL COMPONENTS WHICH RESULT FROM RECEPTION OF DIRECTLY TRANSMITTED RADAR WAVES FROM ANOTHER RADAR APPARATUS  
In a FM-CW or CW radar apparatus, when interference components are Contained in channel signals obtained as beat signals from array antenna elements of respective channels, and the interference...
US20100019957 TIME-COMPRESSED CLUTTER COVARIANCE SIGNAL PROCESSOR  
The time compression processor coding methodology gives rise to an exceedingly fast clutter covariance processor compressor (CCPC). The CCPC includes a look up memory containing a very small...
US20130009804 FAST RAY TRACE TO IDENTIFY RADAR MULTIPATHS  
A method of detecting a target in a room using a radar system having a transmitter for irradiating the object, a sensor for receiving reflected radiation, and circuitry for analyzing the reflected...
US20130194130 Enhanced target detection using dispersive vs non-dispersive scatterer signal processing  
A method of target discrimination and identification, on a computer including a processing unit and a non-volatile storage device, from a radar signal having a plurality of radar return signals,...
US20110187584 Method for Suppressing Clutter in Space-Time Adaptive Processing Systems  
A method surpresses clutter in a space-time adaptive processing system. The method achieves low-complexity computation via two steps. First, the method utilizes an improved fast approximated power...
US20120062409 METHOD FOR DETECTING TARGETS USING SPACE-TIME ADAPTIVE PROCESSING AND SHARED KNOWLEDGE OF THE ENVIRONMENT  
A method detects a target in a radar signal using space-time adaptive processing. A test statistic is T=maxαmaxλ∫Rf1(x0,x1,…,xKα,λ,R)p(R)Rmaxλ∫Rf0(x0 ,x1,…,xKλ,R)p(R)R, where x0...
US20070205937 Apparatus and Method to Identify Targets Through Opaque Barriers  
The present invention is a method and apparatus that provides detection, characterization, and intuitive dissemination of targets. This disclosure combines improvements to ultra-wideband (UWB)...
US20100019951 METHOD FOR DETERMINING A VARIABLE  
A method for determining a variable associated with an object, the object having a plurality of points suitable for reflecting measuring signals, a probability of reflections occurring at these...
US20080079630 Digital pulse reject counter  
A system and method are provided for filtering noise from a pulsed input signal comprising cyclically producing a change in an output signal only if changes in an input signal occur at least a...
US20100201564 REMOVING CLUTTER FROM RADAR CROSS SECTION MEASUREMENTS USING SPECTRAL TAGGING  
A system for performing radar cross section measurements of a target may include a radar system and an antenna associated with the radar system to transmit signals and to receive reflected signals...
US20080231500 Receiving method and receiver  
There is provided a receiver comprising: an estimator configured to estimate an initial noise-plus-interference covariance matrix on the basis of a received signal; a calculator configured to...
US20130271312 METHOD FOR DETERMINING AN ESTIMATE OF RADIAL SPEED OF RADAR ECHOES BY USING DOPPLER INFORMATION  
The present disclosure concerns a method of post-processing of the radar data that uses information of Doppler speed obtained by coherent processing of the input data, in order to calculate the...
US20110223031 WIND TURBINE, A BLADE THEREFOR AND A METHOD OF PROCESSING SIGNALS REFLECTED THEREFROM  
A blade for a wind turbine comprises a first free end and a second end attachable a wind turbine shaft, a first surface joining a second surface along a first side edge and a second side edge, the...
US20110001655 DETERMINING PHYSICAL PROPERTIES OF STRUCTURAL MEMBERS IN DYNAMIC MULTI-PATH CLUTTER ENVIRONMENTS  
A method for determining a physical property of a structural member in a dynamic multi-path clutter environment is given. The method comprises transmitting an RF interrogation signal to a wireless...
US20120326919 RADAR SENSOR HAVING INTERFERENCE SIGNAL COMPENSATION  
Radar sensor having a mixer for mixing a received signal with a reference signal and having a device for compensating interference signals which would overload the mixer, wherein the device for...
US20100259441 CLUTTER FILTERING  
Clutter filtering of broadband radar signals is performed by obtaining a measure of the impedance of an echo target. A distance resolution is selected and then a power spectrum is calculated for...
US20120098695 ANTENNA ARRANGEMENT  
An antenna has multiple antenna elements, with a beam forming Butler matrix, having antenna ports and input/output ports, with each of said antenna elements being connected to a respective port of...
US20080024359 System and method for geometric apodization  
A complex image is apodized to suppress sidelobes. An original complex image of an object is received. The complex image comprises a plurality of data points and sidelobes. The complex image is...
US20120112955 METHOD OF DETERMINING THRESHOLD FOR DETECTION OF PEAK FREQUENCY IN RADAR AND OBJECT INFORMATION PRODUCING APPARATUS USING THE SAME  
A peak detecting threshold determining method is provided which determines a peak detecting threshold which is used by an FMCW radar in detecting a peak frequency component which appears as...
US20100283659 Monobit Based Low Cost High Performance Radar Warning Receiver  
A radar warning receiver is implemented in low cost integrated circuit form utilizing only one analog component, namely a limiting amplifier. By taking the output of the limiting amplifier and...
US20110102247 Adaptive Clutter Filter for Maritime Surface Search Radar  
A time sequence of raw radar data for a region of space is subdivided into a plurality of processing frames. The processing frames are subdivided into a plurality of processing cells and...

Matches 1 - 50 out of 97 1 2 >