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| Number | Title | Issue Date |
| 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 includes a meteorological RADAR that senses the wind velocity. Data f... | 04/29/2008 |
| 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 target, the beat signal is sampled, and a window function is applied to... | 02/26/2008 |
| 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 analysis, and a total sum of the frequency levels of all of the frequency... | 02/19/2008 |
| 7233279 | Method and device for distance measurement by pulse radar In order to provide the method and the device for distance measurement by pulse radar that securely eliminates the false echo from the distance over the detectable limit determined by the pulse generation cycle, the pulse radar comprises the pulse signal sending uni... | 06/19/2007 |
| 7183968 | FM-CW radar system In an FM-CW radar system, a frequency modulating said modulating wave output from said modulating signal generator has a frequency variation skew with respect to a time axis (modulation skew), and the radar system includes a means for varying the modulation skew by ... | 02/27/2007 |
| 7184493 | Pulse sorting apparatus for frequency histogramming in a radar receiver system Disclosed is a real-time pulse sorting apparatus of a preprocessor in a pulsed radiation detection system. The apparatus, responsive to digital signals generated by a system receiver, uses the instantaneous frequency as the address input to store discrete data group... | 02/27/2007 |
| 7136013 | Radio-wave radar system and adaptive cruise control system In a radio wave radar system using a two-frequency CW modulation method, it is possible to detect a distance between a host vehicle and a forward vehicle and to realize a stable ACC following travel, even in a condition in which the relative speed is 0. By combining... | 11/14/2006 |
| 7084807 | Method and apparatus for generating HF signals for determining a distance and/or a speed of an object The present invention provides a method for generating HF signals for determining a distance and/or a speed of an object, having the following steps: generating a pulsed demodulated signal (6′) from a first signal (3) and a second signal (4) i... | 08/01/2006 |
| 7053815 | Radar tracking system A radar tracking system for an anti-aircraft, missile, including angle tracking, doppler tracking and range tracking feedback loops operating on sum and difference channels. Fast fourier transform digital filters are used to provide a frequency spectrum of the sum a... | 05/30/2006 |
| 6972710 | Automotive radio wave radar and signal processing In an automotive radio wave radar, a center frequency of a transmitted wave is shifted at a certain cycle, and position information of an obstacle detected at three or more center frequencies is subjected to decision by majority to determine whether detection result... | 12/06/2005 |
| 6933878 | Wide bandwidth radar A wave-form generator drives a number of microwave generating devices each operating at different frequency bands. The output of each microwave generator is connected to its own transmission channel of limited bandwidth which contains all the non-linear components n... | 08/23/2005 |
| 6924762 | Radar designed to acquire radar data with high accuracy A radar is provided which transmits a radar wave whose frequency is so modulated as to rise, fall, and be kept constant cyclically. The radar uses beat signals produced by the radar wave and radar echoes received by two antennas to produce radar data on a target. Wh... | 08/02/2005 |
| 6703966 | Method and device for measuring the speed of a moving object To measure the absolute speed of a body 100 moving relative to the ground 33 using an onboard speed sensor 1, a radar wave is transmitted towards the ground by an antenna with a wide aperture angle. The wave reflected by a reflecting obstacle on the groun... | 03/09/2004 |
| 6703967 | Distance measuring device From a transmitter (18) and a transmission antenna (10), a first frequency signal having a fixed frequency is transmitted for a predetermined time or more, a second frequency signal having a certain frequency difference from the first frequency signal is ... | 03/09/2004 |
| 6674393 | FM-CW radar processing device An FM-CW radar processing system pairs up peaks obtained by fast-Fourier transforming a beat signal occurring on an up portion and a down portion of a triangular-shaped FM-CW wave, calculates a distance or relative velocity with respect to a target object... | 01/06/2004 |
| 6501417 | Transceiver assembly used in a Doppler-based traffic radar system A transceiver assembly is provided for use in a Doppler-based traffic radar system for determining the speed of at least one target. The transceiver assembly includes a cover for receiving therein at least some of the component parts of the transceiver as... | 12/31/2002 |
| 6462702 | Doppler-based traffic radar system A Doppler-based radar system and related method are provided for determining the direction and speed of at least one selected target traveling in the same lane as a moving patrol vehicle supporting the radar system independent of the direction of the targ... | 10/08/2002 |
| 6445337 | Method for measuring the speed of a vehicle The invention concerns a method and a device to measure the speed (v) of a vehicle relative to a road surface. To increase the accuracy of the speed measurement and in order to be able to determine the speed (v) of the vehicle independently of the diamete... | 09/03/2002 |
| 6417796 | Doppler-based traffic radar system A Doppler-based radar system and related method are provided for determining the direction and speed of at least one selected target traveling in the same lane as a moving patrol vehicle supporting the radar system independent of the direction of the targ... | 07/09/2002 |
| 6335701 | Radar system and coherent integrating method thereof Disclosed is a radar system capable of obviating a problem that a sufficient improvement of an S/N ratio could not be obtained in the prior art, and comprising a transmitter/receiver for detecting a phase of a receiving signal reflected from an observatio... | 01/01/2002 |
| 6310573 | Velocity calculation Method and device for calculating a velocity of a moving transmitter using Rayleigh-fading of a received radio signal are presented. The method includes the step of making at least two parallel calculations of at least two respective values using the rece... | 10/30/2001 |
| 6292129 | Structure of radar system with multi-receiver channel A radar apparatus is provided which includes a transmitter, a receiver, and a signal processor. The transmitter produces a transmit signal which is so modulated in frequency as to change with time cyclically and transmits the transmit signal as a radar wa... | 09/18/2001 |
| 6184817 | 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. The switching speed between frequencies is very fast, limit... | 02/06/2001 |
| 6072422 | FM-CW radar apparatus An FM-CW radar apparatus permits proper pairing between beat frequencies in an up interval and beat frequencies in a down interval and comprises a peak extracting section for extracting level peaks at each scanning angle of beat frequencies, each beat fre... | 06/06/2000 |
| 6040796 | Radar system installable in an automotive vehicle for detecting a target object A modulation signal generating section produces a modulation signal for controlling an oscillation frequency of a voltage-controlled oscillator. The modulation signal generating section comprises a triangular wave oscillator producing a linear modulation ... | 03/21/2000 |
| 6023236 | Speedometer assisted patrol speed search for DSP traffic radar A digital signal processor (DSP) traffic radar utilizing pulses from the patrol vehicle's electronic speedometer to steer the DSP's search of Doppler return information for the patrol vehicle's radar return signal, to improve target identification and min... | 02/08/2000 |
| 6008752 | Doppler-based traffic radar system A Doppler-based radar system used to determine the speed of a selected moving target includes an array of selectable filters and related method for determining the speed of the selected moving target traveling in the same lane as a moving patrol vehicle s... | 12/28/1999 |
| 5963163 | Method and device for frequency-modulated continuous-wave radar detection with removal of ambiguity between distance and speed In a method and device for frequency-modulated continuous-wave radar detection with removal of ambiguity between the distance and the speed, the radar sends out at least alternately two parallel and discontinuous frequency modulation ramps that are slight... | 10/05/1999 |
| 5757308 | Radar process for the measurement of distances and relative speeds between a vehicle and one or more obstructions In the particular embodiment disclosed in the specification, a CW radar process for measurement of distances and relative speeds between a vehicle and one or more obstructions including transmitting a sequence of constant-frequency radar signal bursts whi... | 05/26/1998 |
| 5757307 | Radar system for detecting distance, mutual speed and azimuth of a target obstacle Receivers 14 and 16 comprise mixers 14b and 16b for mixing reception signals of receiver antennas 14a and 16a with a transmission signal to generate beat signals B1 and B2, respectively. Signal processing section 20 performs the Fourier transformation of ... | 05/26/1998 |
| 5751241 | Method and apparatus for measuring the speed of a moving body To measure the speed of a body (1) moving relative to the ground (2) by means of a broad-band Doppler radar (3) fixed to the moving body, two incident radar waves are transmitted successively towards the ground at instants that are close together, and the... | 05/12/1998 |
| 5677695 | Radar apparatus for detecting a distance/velocity A radar apparatus for detecting a distance/velocity has a transmitting system for transmitting a signal which is frequency-modulated with a modulating signal having a predetermined recurrence frequency, a receiving system for receiving a reflected wave si... | 10/14/1997 |
| 5570093 | Police traffic radar using absolute signal strength information to improve target signal processing accuracy A police radar utilizing digital data transmission from the antenna unit to a separately housed counting and display unit. The antenna has a double balanced mixer to suppress even order harmonics. The counting and display unit has a computer programmed to... | 10/29/1996 |
| 5483242 | Method for measuring the distance and velocity of objects In a method for measuring the distance and the velocity of objects employing electromagnetic waves, the frequency of an emitted signal is modulated. The signals received during one rise and one drop in the frequency of the emitted signal are mixed with th... | 01/09/1996 |
| 5347281 | Frequency-coded monopulse MTI A pulse-compression, MTI, doppler-radar system for determining target velty information from a single, frequency-coded uncompressed target-return pulse includes a coded modulator, two pulse compressors, and a phase-comparison processor. The coded modulat... | 09/13/1994 |
| 5276453 | Method for ambiguity resolution in range-Doppler measurements A method for resolving range and doppler target ambiguities when the target has substantial range or has a high relative velocity in which a first signal is generated and a second signal is also generated which is coherent with the first signal but at a s... | 01/04/1994 |
| 5231403 | Moving target indicator using higher order statistics While the computation of high resolution radar images based on higher order tatistics is position insensitive, velocity estimation may be based on the ratios of values of a trispectral slice and a cross-trispectral slice computed as quadruple products of c... | 07/27/1993 |
| 5151702 | Complementary-sequence pulse radar with matched filtering following doppler filtering A radar generates first and second mutually complementary binary code sequences. The autocorrelation functions of the first and second pulse sequences are selected so that, in the sum of their autocorrelation functions, the main lobes add, and the sidelob... | 09/29/1992 |
| 5107270 | Method and apparatus for increasing a radar's range with improved scan-to-scan integration of doppler filtered signals Method and apparatus for improving detection ranges of a pulsed radar sys wherein electromagnetic return signal data in range cell order is doppler filtered, digitized and stored in doppler memory channels over multiple scans of an azimuth. The digital d... | 04/21/1992 |
| 5014061 | Adaptive multifrequency signal combining system Apparatus and methods for combining incoherent signals having different carrier frequencies but a common modulation to obtain a coherent summation of the modulations of such signals are described. The apparatus comprises adaptive means of changing the car... | 05/07/1991 |
