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7606294 |
Channel quality estimation method and receiving apparatus
Channel quality can be detected accurately in a wireless transmission system such as an HSDPA method. In the case of estimating a channel quality of a signal transmitted by a Code Division...
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7598900 |
Multi-spot inverse synthetic aperture radar imaging
Providing multi-spot inverse synthetic aperture radar (ISAR) imagery is disclosed. Embodiments of techniques in accordance with the present disclosure may advantageously improve multiple target...
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7598899 |
Method and apparatus for compression of SAR images
A computer system for compressing synthetic aperture radar (SAR) images includes a database for storing SAR images to be compressed, and a processor for compressing a SAR image from the database....
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7589666 |
System and method for processing data in weather radar
Systems and methods that adapt to the weather and clutter in a weather radar signal and apply a frequency domain approach that uses a Gaussian clutter model to remove ground clutter over a variable...
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7583224 |
Radar apparatus with automatic local oscillator tuning function
The portion corresponding to a main bang signal leaking from a transmission/reception switching unit is extracted as a frequency estimation signal from an IF signal from a mixer in a signal...
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7579982 |
Radar apparatus
A radar apparatus includes: a plurality of receiving antennas disposed at regular spacings; two transmitting antennas which are positioned each at opposed ends of the receiving antennas, and a...
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7579981 |
Signal processing method for FM-CW radar
Disclosed is a signal processing method for an FM-CW radar that can accurately detect the relative distance, relative velocity, etc. with respect to a target approaching or receding at a high...
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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...
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7570200 |
Stepped frequency radar
In the invention, a four-port junction ( 10 ) has a port ( 12 ) connected to an RF signal source ( 14 ). The four-port junction ( 10 ) also has an antenna port ( 16 ) coupled to a combined...
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7570197 |
Radar device
One of the objects of the present invention is to reduce the size of a radar device mounted on a vehicle body. To achieve the object, one aspect of the invention provides a radar device, which is...
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7567206 |
Integrated circuit for measuring the distance and/or velocity of objects
An integrated circuit for measuring the distance and/or velocity of objects, having: a high-frequency signal generating device for generating a first HF signal having a predefined frequency and a...
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7567204 |
Method for determining noise floor level and radar using the same
A method for a radar for detecting a noise floor level of an electric signal corresponding to an incident radio wave received by the radar, the incident radio wave including a return of a radar...
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7567202 |
Radar system
Embodiments of the invention are concerned with a radar system, and relates specifically to scanning radar systems that are suitable for detecting and monitoring ground-based targets. In one...
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7567198 |
Subaperture 3D imaging
Embodiments of methods, apparatuses, and articles for receiving phase history data collected from synthetic aperture radar imaging of a terrain, dividing the received phase history data into a...
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7561100 |
Correlation processor for receiver
A correlation processor for a receiver is capable of carrying out a correlation process with highly suppressed side lobes, improved resolution, and minimized S/N loss. The correlation processor is...
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7555169 |
Method and a device for reducing image noises
An image noise reduction method in frequency domain is provided, comprising selecting a first image and applying a Fourier transform thereon to acquire a first frequency spectrum, wherein each...
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7551118 |
RFI suppression in SAR
A filter scheme for broadcast interference cancellation that is computationally efficient and numerically robust Airborne Low Frequency Synthetic Aperture Radar (SAR) operating in the VHF and UHF...
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7548191 |
Radar oscillator capable of preventing leak of oscillation output
In order to enable intermittent output of an oscillation signal without essentially producing a leak in response to a pulse signal indicating a transmission timing of a radar wave, a radar...
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7538720 |
Simultaneous savings in bandwidth and energy using waveform design in presence of interference and noise
A transmit signal is output from a transmitter towards a target and towards interference. A combination signal is received at a receiver, wherein the combination signal includes the transmit signal...
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7538712 |
Method and apparatus for decompression of SAR images
A computer system for decompressing synthetic aperture radar (SAR) images includes a database for storing SAR images to be decompressed, and a processor for decompressing a SAR image from the...
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7535409 |
Imaging radar method and system
A time-reversal imaging radar system for acquiring an image of a remote target includes an antenna array having a plurality of spaced-apart antennas, and a transceiver coupled to the antenna array...
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7532154 |
Frequency modulation radar device
The frequency modulation radar device includes a transmitting unit ( 5 ), M receiving units for receiving a reflected signal as M channels, a mixing unit ( 7 ) for mixing the transmitting signal...
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7532152 |
Automotive radar system
An automotive radar system having a high frequency radio transmitter which generates a radar signal in a known direction. A high frequency radio receiver receives echoes from the radar signal in...
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7522097 |
Radar platform angular motion compensation
A method to compensate for radar platform angular motion may include measuring or estimating any radar platform angular motion. The method may also include substantially decoupling each array...
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7511656 |
Spotlight synthetic aperture radar (SAR) system and method for generating a SAR map in real-time using a modified polar format algorithm (PFA) approach
Embodiments of spotlight synthetic aperture radar (SAR) systems and methods generating a SAR map in real time with minimum latency using a modified Polar Format Algorithm are generally described...
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7508334 |
Method and apparatus for processing SAR images based on an anisotropic diffusion filtering algorithm
A computer system for processing synthetic aperture radar (SAR) images includes a database for storing SAR images to be processed, and a processor for processing a SAR image from the database. The...
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7504989 |
On-vehicle radar device
An on-vehicle radar device has a transmission section for transmitting a radio wave to an object, a receive section for receiving the radio wave reflected by the object, and a processing section...
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7504985 |
Multi-dimensional real-array radar antennas and systems steered and focused using fast fourier transforms
Radar systems are disclosed that include a signal generator, an antenna, a switching circuit, an I/Q sampling and signal-demodulation (demodulation) processor, and a FFT processor. The signal...
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7498977 |
Field probe form the angular response of a rigid body
Probing incident radar fields in a target test zone of a RCS test facility by exploiting angular radar response of a long and uniform rigid body supported horizontally across or vertically through...
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7489266 |
Radar system and computer program
A radar system comprises: a plurality of reception antennas; a transmission wave generating device; a transmission antenna; a mixer; an A/D converter; a storage device which stores the digitized...
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7482967 |
Digital electronic support measures
An apparatus for characterising an input signal within abroad frequency band by comparing the same input signal in a plurality of channels, in order to operate digital Electronic Support Measures...
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7479921 |
Distance measuring device, distance measuring method and distance measuring program
A transmission unit emits an electromagnetic wave having the same frequency f as an output signal from a sending unit in a direction of a measurement axis. A detecting unit performs synchronous...
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7479920 |
Obstacle and terrain avoidance sensor
A method and apparatus for terrain mapping and/or obstacle detection for aircraft, including (a) transmitting a non-scanning beam that illuminates the terrain and/or obstacles; (b) receiving a...
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7474255 |
Target tracking method of radar with frequency modulated continuous wave
The present invention relates to a target tracking method of radar with frequency modulated continuous wave, which transmits a transmitted signal to receive a return wave of the transmitted signal...
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7453398 |
Process compensating for array antenna radiating element positioning errors
The invention refers to array antennas consisting of a set of individual sources set out over the surface of the antenna and whose mechanical positioning is determined in such a way as to obtain...
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7450057 |
Signal processing for accelerating moving targets
A method for performing signal processing for accelerating moving targets, in one implementation, encompasses a method for performing coherent integration of pulses within a CPI for SMTI radar. In...
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7450054 |
Method and apparatus for processing complex interferometric SAR data
A computer system for processing interferometric synthetic aperture radar (SAR) images includes a database for storing SAR images to be processed, and a processor for processing interferometric SAR...
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7432849 |
Frequency modulation radar apparatus for vehicle use background of the invention
A frequency modulation radar apparatus for vehicle use can suppress the influence of noise to avoid incorrect estimation due to noise thereby to provide a beat frequency with high accuracy and at...
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7425917 |
Radar for detecting the velocity of a target
A radar including a target measurement component, a differential velocity calculator and an overall velocity determination portion. The target measurement component transmits and receives an...
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7425693 |
Spectral tracking
A method of tracking a target. The method includes the steps of acquiring a first spectral image of a scene that includes the target, designating a spectral reference window, in the first spectral...
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7411544 |
System and method for determining patrol speed
A system for processing radar data from two or more areas of interest is provided, such as for simultaneously processing vehicle speeds in the opposite lane in front of the patrol vehicle and in...
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7411540 |
Synthetic aperture radar (SAR) data compression
A method of compressing phase history (PH) data includes (a) dividing PH data into multiple sub-apertures; (b) transforming the sub-apertures into multiple coarse resolution images; and (c)...
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7397419 |
Radar apparatus and failure detection method thereof
The present invention provides a radar apparatus, which can diagnose failure at low cost with high accuracy, and a failure diagnosis method thereof. An antenna serves as both a transmit antenna and...
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7397418 |
SAR image formation with azimuth interpolation after azimuth transform
Two-dimensional SAR data can be processed into a rectangular grid format by subjecting the SAR data to a Fourier transform operation, and thereafter to a corresponding interpolation operation....
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7394422 |
Interferometer-type radar
A transmitter for transmitting signals to targets and a receiver for receiving signals reflected from targets are included. The transmitter outputs CW signals for detecting direction and velocity...
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7391361 |
Signal processing method for FM-CW radar
Disclosed is a signal processing method for an FM-CW radar that can accurately detect the relative distance, relative velocity, etc. with respect to a target approaching or receding at a high...
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7382310 |
Method for independently setting range resolution, Doppler resolution, and processing gain of a pseudo-random coded radar system
Methods are disclosed for independently setting the range resolution, Doppler resolution, and pulse compression processing gain of a Doppler radar system. Higher Doppler resolution is achieved by...
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7379018 |
System and method for verifying a radar detection
The method and system provide provisions for generating a respective detection state value associated with each of a plurality of RF receive beams. A first state value is indicative of a detection....
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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...
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7372897 |
Portable information communication terminal, program, and recording medium
The number of times for averaging operation for averaging a correlation value of a received signal and a reference signal is properly controlled. When the correlation value is not averaged, since a...
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