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7606193 |
Methods for implementing a dynamic frequency selection (DFS) feature for WLAN devices
Various regulatory domains promulgate standards to define how wireless devices should operate in certain frequency bands. The 5 GHz spectrum is of particular importance to certain regulatory...
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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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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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7583222 |
Method for using pulse compression in weather radar
A system and method for processing data related to weather phenomena in a meteorological radar system. The method includes receiving an echo signal generated by transmitting a long pulse and...
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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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7576685 |
Radar sensor
A radar sensor having a transceiver device ( 10, 12 ), an analog/digital converter ( 14 ) for converting the received signals (A) into digital data, a memory device ( 18 ) for storing the digital...
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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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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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7567201 |
Vehicle-installation direction detection apparatus enabling accurate detection of target body directions irrespective of vehicle speed
A vehicle-installed direction detection apparatus is controlled in accordance with the vehicle speed, to detect respective directions of one or more target objects by selectively applying...
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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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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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7548750 |
System and method for detection of primary spectrum users
An external primary spectrum user detector (ESUD) is used to take over the role of integral radar detectors, and relieve user devices of the constraints associated with Primary Spectrum User...
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7535403 |
Method of determining the velocity field of an air mass by high resolution doppler analysis
A high resolution Doppler analysis of a radiofrequency signal is exemplified by the analysis of air mass movement using meteorological radar. A high resolution spectral analysis method for a...
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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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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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7495604 |
Electronic scanning radar apparatus
A sampled beat signal is cut out into two or more short time data in a time direction concerning each antenna component. From a frequency spectrum of the short time data, an interference element...
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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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7460052 |
Multiple frequency through-the-wall motion detection and ranging using a difference-based estimation technique
A multi-tone CW radar ( 14 ) is used to project signals from an antenna ( 22 ) and to receive returns with the same antenna. The phase differences between the outgoing signals and the returns are...
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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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7424269 |
System, method and device of radar detection
Embodiments of the present invention provide a method, apparatus and system of radar detection. The method, according to some demonstrative embodiments of the invention, may include comparing an...
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7421212 |
Detecting and locating pulses using a Bragg cell
Detecting a pulse of a signal includes receiving the signal and a light beam. The signal drives a spatial light modulator to modulate the light beam, where the complex amplitude of the modulated...
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7417579 |
Weather radar with significance determination
A weather radar system includes processing electronics. The processing electronics sense weather and determine significant weather based upon the altitude of the weather. The altitude of the...
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7414567 |
ADS-B radar system
A system and method of using a standard ADS-B transmitter and encoder to identify targets to provide a collision avoidance system, wherein the method includes the steps of providing a standard...
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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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7397421 |
Method for detecting acoustic emission using a microwave Doppler radar detector
Acoustic emissions are detected by reflecting microwave radar signals off of an object, receiving reflected radar signals, generating an intermediate frequency, and filtering the intermediate...
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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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7382312 |
Syntactic target classifier
Disclosed is a Syntactic Landmine Detector. The syntactic landmine detector processes a received signal from a ground penetrating RADAR which contains at least one spatial sequence, the spatial...
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7365675 |
Measuring wind vectors remotely using airborne radar
Airborne meteorological radars and related networks and models. In one embodiment a network for creating a meteorological model includes a mobile sensing node and a modeling node. The sensing node...
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7352321 |
Determining statistical descriptors of a signal from a set of its samples
An entity is subjected to an interrogating signal, and the reflection from the entity is repeatedly sampled to obtain a first set of values each dependent on the intensity of the reflected signal....
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7339518 |
FMCW radar device and method for detecting interference
An FMCW radar device executes a frequency analysis for a beat signal in a frequency increase interval and a frequency decrease interval, to obtain frequency components in a predetermined high...
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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...
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7333048 |
Periphery monitoring system
In a periphery monitoring system for monitoring movements of a mobile object around an installation location of a Doppler sensor, a signal output from the Doppler sensor is subjected to an FFT...
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7304604 |
Radar sensor and method for operating a radar sensor
In a radar sensor, a continuous microwave signal is passed through an RF switch which is periodically controlled by a pulse signal. The pulse signal is frequency modulated in such a way that the...
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7301495 |
Interrupt SAR implementation for range migration (RMA) processing
A moving radar ( 405 ) generates a synthetic aperture image from an incomplete sequence of periodic pulse returns. The incomplete sequence of periodic pulse returns has one or more missing pulses....
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7292178 |
Aircraft hazard detection and alerting in terminal areas
A weather radar system or method can be utilized to determine potential weather hazard for an aircraft in a terminal area. The weather radar system can utilize processing electronics coupled to an...
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7286078 |
Radar system for motor vehicles
A radar system for motor vehicles, having an antenna, a first processor which is developed to transform signals supplied by the antenna via a primary signal path into a spectrum, and a second...
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7274322 |
Systems and methods for automatic gain control for multichannel receivers
Apparatus and methods for performing automatic gain control in a radar system. One embodiment of the system includes an attenuator that controls gain of signals received from a radar receiver. A...
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7248208 |
Methods and systems for maintaining a position during hovering operations
A method for maintaining a position of a hovering vehicle that incorporates a radar altimeter is described. The method includes receiving signals at the radar altimeter based on a change of...
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7245250 |
Synthetic aperture radar image compression
A method is disclosed of generating multi-resolution images using synthetic aperture radar (SAR) phase history data. A high resolution SAR image may be formed from the phase history data, or a...
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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...
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7209071 |
System and method for distance measurement
A system and method for performing distance measurement using wireless signals. A time of flight calculation is enabled by an interrogating device that transmits an interrogation signal to a...
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7199752 |
Phased null radar
A method for reducing the interference between a source transmitting pulses and equipments having nominal bandwidths which are outside the nominal bandwidth of the transmitted pulses, but which...
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7183964 |
Mine detection using radar vibrometer
A frequency-stepped radar may be used to detect buried landmines by sequentially inducing vibrations of different frequencies in the landmine. A sensor detects signals associated with the...
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7180442 |
Target indentification method using cepstral coefficients
A method of identifying an unknown target comprising creating a density function of cepstral coefficients for a known target; receiving a signal from the unknown target; transforming the signal...
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7151477 |
Signal detection
A transmitted signal and a received signal are combined and the combination is expected to determine whether or not a target signal is present. Either the transmitted signal or the received signal...
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7142153 |
Short pulse/stepped frequency radar system
A unique hardware architecture that combines short pulse, stepped frequency and centerline processing. The inventive architecture implements a radar system having a transmitter for transmitting...
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7126526 |
Phased null radar
A method for reducing the interference between a source transmitting pulses and equipments having nominal bandwidths which are outside the nominal bandwidth of the transmitted pulses, but which...
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7123181 |
Surveillance method and apparatus
An inexpensive, small, low-power consumption, wide-band, high resolution spectrum analyzer is provided as a listening device for throw-away applications such as surveillance that involve deployment...
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7119732 |
Bistatic and multistatic system for space situational awareness
Provided is a bistatic and multistatic system for detecting and identifying a target in close proximity to an orbiting satellite. An electromagnetic fence is established to surround the satellite,...
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7106244 |
Freight container monitoring system
A system and a method for monitoring a freight container are provided. The method includes the steps of generating a resonant spectrum representative of an initial condition of internal surfaces...
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