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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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.... |
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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... |
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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... |
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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... |
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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... |
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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,... |
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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... |
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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... |
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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... |
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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,... |
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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... |
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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... |
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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... |
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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,... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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,... |
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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... |
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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=maxαmaxλ∫Rf1(x0,x1,…,xKα,λ,R)p(R)Rmaxλ∫Rf0(x0
,x1,…,xKλ,R)p(R)R, where x0... |
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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)... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |