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6340946 |
Method for determining storm predictability
A method and apparatus for determining the predictability of an element in a weather radar image. An image filter approximating the envelope of the organized storm radar image is applied to a pixel...
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6339394 |
Digital coherent radar
The digital coherent radar generates its transmitted waveform from a low intermediate frequency (IF) and a local oscillator (LO) by digitally generated waveforms after passing through...
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6333710 |
Method for measuring the time delay between two periodic pulse signals of the same frequency
The invention concerns a device for measuring the time delay between a first periodic pulse signal (2) and a second periodic pulse signal (5) having the same frequency as the first pulse signal...
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6326917 |
Scanner-control device
A scanner-control device for scanning an echo signal formed by returning transmit pulses, includes a clock generator, which triggers a pulse shaper for the transmit pulses and a further pulse...
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6297763 |
Method of optimizing the coverage area of a sensor
A method is provided of optimizing, within an area which itself contains a number of part areas, the coverage of a sensor which has an angle-dependent range in a least one plane, and which sensor...
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6297764 |
Radar receiver having matched filter processing
An electronic counter-measure receiver can be colocated with a threat simulator radar, which transmits a radar signal. As a pulsed-Doppler signal, this transmitted radar signal is sampled as a...
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6297766 |
Portable weather indicating device and method
A portable weather indicating device includes a housing with a display that can be carried by a user during hiking, biking, or other activities. A communication link and microprocessor are located...
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6295020 |
Master frequency generator
A system is provided for generating multiple frequencies in a specified frequency band, with a specified step size between frequencies, in which the spectral purity of the frequencies is assured....
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6281833 |
Range rate aiding in a pulsed radar system
A timing and control method and apparatus (111) for performing precise range rate aiding includes a range gate delay means (114) for generating an estimate of the range gate delay (135) each pulse...
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6281835 |
Radar transmitter
The invention relates to solid-state radar transmitter, comprising a number of amplifier modules (4.i). To prevent the trailing edge of a steer pulse supplied to the radar transmitter from becoming...
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6282495 |
Vehicle navigation system with improved powerup performance
A navigation system includes a driver presence sensor and engine running detection circuitry. When the detection circuitry determines that the engine of the vehicle is not running, the navigation...
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6278399 |
Radar apparatus and method for detecting malfunction of radar apparatus
The radar apparatus of the present invention comprises a beam transmitter for radiating a radar beam, a beam receiver for receiving a reflected signal, a processor for calculating the position of...
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6278398 |
Sensor system operating method and a sensor system
A method in which a sensor system with a frequency-modulated signal source an a delay line for generating a time-delay reference signal is implemented. Phase errors are compensated by correcting...
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6278400 |
Dual channel microwave transmit/receive module for an active aperture of a radar system
Two discrete transmit/receive (T/R) channels are implemented in a single common T/R module package having the capability of providing combined functions, control and power conditioning while...
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6275180 |
Collision warning system
A collision warning system (10) discriminates between objects which pose a threat of collision from those which do not by measuring the relative sightline rate of the object, this being a measure...
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6268822 |
Dual-frequency millimeter wave and laser radiation receiver
A tandem dual-frequency sensor for a missile that uses a steerable dichroic primary millimeter wave reflector to reflect millimeter wave energy to a secondary reflector while passing laser light in...
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6266004 |
Radar method used in a motor vehicle
The invention relates to a radar method for an automatic intelligent traffic control (AICC) in a motor vehicle. The use of a frequency modulation continuous wave method (FM-CM) is suggested in...
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6262680 |
Rocket trajectory estimating method, rocket future-position predicting method, rocket identifying method, and rocket situation detecting method
There is provided a rocket trajectory estimating method comprising the steps of: measuring a GLOS angle of a flying rocket a tracking system; passing the GLOS angle data through a batch filter to...
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6259396 |
Target acquisition system and radon transform based method for target azimuth aspect estimation
A Radon transform based method that provides for target azimuth aspect estimation and target shape measurement. A Radon transform is applied to a binary (N×N pixels) target chip to extract target...
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6255985 |
Method and apparatus for optimizing radar system performance
A method and apparatus for optimizing radar system performance is provided that is independent of any specific radar application. In one embodiment, an optimization system (110) includes an...
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6255984 |
Sensor system
FMCW doppler radar, in which a reference signal is generated from the transmit signal via a delay line and a mixer. A measuring signal which is received and mixed with the transmit signal is...
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6249242 |
High-frequency transmitter-receiver apparatus for such an application as vehicle-onboard radar system
A high-frequency transmitter-receiver apparatus includes a transceiver circuit realized in a planar structure by a dielectric substrate and a semiconductor chip and a planar antenna formed on a...
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6239741 |
UWB dual tunnel diode detector for object detection, measurement, or avoidance
A highly sensitive, high-speed dual tunnel diode detector is described for use in Ultra Wideband (UWB) object detection systems, such as a radar. The extended capability of the detector to both...
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6232913 |
Method and system for measuring radar reflectivity and doppler shift by means of a pulse radar
Characteristics of a target are measured by a radar or sonar. Pulses (101, 102, 103) are transmitted and in between (X) the transmissions of pulses a signal is received which depends on the...
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6232909 |
Communication network optimization tool
This invention identifies a process for determining the performance of radio frequency (RF) links in the Army's Enhanced Position Reporting System (EPLRS) with a high level of statistical...
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6222481 |
Method of detecting and classifying objects by means of radar
The present invention relates to a method of detecting and classifying objects using radar. The method means that a broadband radar signal comprising wavelengths that coincide with characteristic...
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6211807 |
System using spread spectrum modulation for locating underground objects
The location of underground objects such as pipes and conduits are located by detecting electrical signals emitted by the underground objects where the radiated signals include spread spectrum...
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6211809 |
Surface-based passive millimeter-wave landing aid
A passive millimeter-wave imaging system (10) that includes a millimeter-wave camera (12) positioned at the end of an aircraft landing strip (14) to provide an image (20) of the aircraft (16)...
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6204804 |
Method for determining object movement data
The velocity vector of a moving object is precisely determined by using radar measurements of the angle to and the radial speed of a moving object. This can be done in a radar system comprising one...
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6198424 |
Multiple process product interface detection for a low power radar level transmitter
Disclosed is a low power time domain reflectometry radar (LPTDRR) level transmitter for calculating levels of first and second products in a tank. A termination extends into the first and second...
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6195036 |
Pulse radio-localization system
A pulse radar system includes a frequency-agile magnetron comprising an input for giving a feeding voltage of a magnetron tuner. A modulator connected to said magnetron forms pulses of a feeding...
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6191724 |
Short pulse microwave transceiver
Harmonic techniques are employed to leverage low-cost, ordinary surface mount technology (SMT) to high microwave frequencies where tight beamforming with a small antenna makes reliable,...
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6154167 |
Excitation method and ultra-wide bandwidth antenna for ground penetrating radar systems
A novel method of creating and detecting ultra wide bandwidth signals in a ground penetrating radar context.
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6154166 |
Microwave detector
In order to detect microwaves from radar type speed measurement devices and microwaves leaking out of reverse detectors without being detected by such reverse detectors, a microwave detector is...
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6150976 |
Synthesis of overlapping chirp waveforms
A digital radar landmass simulator (DRLMS) used for stimulation testing pulse radars, wherein the DRLMS operates by synthesizing time-overlapping chirp waveforms using finite impulse response...
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6140954 |
Radar device
A radar device for detecting distances and relative speeds of obstructions such as preceding vehicles has a stationary object identifier for identifying stationary objects such as roadside guard...
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6137434 |
Multibeam radar system
A multibeam radar system includes a multibeam radar module having n (n is a natural number of at least 3) transmitting/receiving channels for transmitting high-frequency signals and receiving echo...
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6137436 |
Alarm sensor, in particular for a target tracking apparatus
A pseudo-noise-modulated spread spectrum is irradiated undirectedly--or, encoded by different modulation, into mutually displaced spatial sectors--and the energy (20) received after reflection at a...
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6130640 |
Radar module and MMIC package for use in such radar module
A radar module includes an antenna assembly, a plurality of transmitting and receiving assemblies, a plurality of circulators, a common signal generator circuit, and a signal distributor all...
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6127965 |
Method and apparatus for rejecting rain clutter in a radar system
A method and apparatus for detecting the presence of objects in a vehicle operator's blind spots. The apparatus comprises a side-facing Doppler radar system using continuous wave (CW) transmission...
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6111535 |
Method of minimizing leakage energy in a synthetic aperture radar process
A method of minimizing leakage energy in a synthetic aperture radar (SAR) system is based a Lagrangian function constructed from image-domain magnitude, and a "penalty function" based upon the...
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6107955 |
Radar sensor for a vehicle
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6107953 |
Minimum-gradient-path phase unwrapping
A method of phase unwrapping is described along with an efficient UNIX/C implementation. From selected reference or starting points in a phase-wrapped image, the phase gradients with respect to the...
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6097335 |
Transmit/receive module having multiple transmit/receive paths with shared circuitry
A transmit/receive (T/R) module adapted for use in a radar system. The module has a unified structure including a layered substrate on and in which two T/R channel circuits are integrated. The...
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6097329 |
Meteorological radar apparatus
A meteorological radar apparatus which calculates a shift of the pulse synchronization of a transmission pulse signal output from a transmission unit and corrects the transmission timing of the...
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6094158 |
FMCW radar system
A frequency modulated continuous wave (FMCW) phase shift radar system includes a transmitter, a receiver, and a linearly-tuned oscillator circuit arranged in the transmitter as a source of...
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6091355 |
Doppler radar speed measuring unit
A Doppler radar speed measuring module, that is self-contained and handheld, is fabricated on a multilayer PCB (printed circuit board) containing at least one antenna array and electronic...
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6091356 |
Chirp source with rolling frequency lock for generating linear frequency chirps
A source for a linear homodyne transceiver that generates repeated linear chirps. A YIG oscillator with a main coil and an FM coil receives a basic linear current ramp at the main coil to generate...
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6087976 |
Radar object detection system having normalized range sensitivity
An improved obstacle detection radar system and method of operation in which the detection sensitivity is normalized with respect to target range without significantly increasing system complexity...
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6087972 |
Microwave sensor for object motion detection
A microwave sensor for determining the velocity and direction of a moving object comprises a mixer, phase shifter, and receive/transmit antenna mounted in series, the mixer having a single...
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