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Class 342/111 - With plural receiver frequency band separation


Subclass of Class 342 - Communications: directive radio wave systems and devices (e.g., radar, radio navigation)
Definition: Subject matter including the use of more than one frequency
No. of patents: 62
Last issue date: 04/01/2008


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NumberTitleIssue Date
7352320FM-CW radar
An FM-CW radar includes a transmitting section, a mixing section, an A/D conversion section, a storage unit, and a signal processing section. The transmitting section transmits a continuous wave frequency-modulated with a triangular wave. The mixing section mixes th...
04/01/2008
7339518FMCW 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 frequency range exceeding a frequency range corresponding to a target dete...
03/04/2008
7336218Radar 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
7199664Integrated switchless programmable attenuator and low noise amplifier
An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu...
04/03/2007
7184493Pulse 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
7162361System for influencing the speed of a motor vehicle
System for evaluating the traffic environment of a motor vehicle and for influencing the speed of the motor vehicle in its own traffic lane, comprising an electronic control unit, which is connected to a signal transmitter that produces a signal characteristic of th...
01/09/2007
7136013Radio-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
7099373Noise shaping technique for spread spectrum communications
A spread spectrum noise shaper uses a modulation technique to achieve a greater signal-to-noise or signal-to-interference ratio (SNR or SIR). The technique doubles the system SIR, in principle. This doubling yields a doubling in system capacity. SNR is increased by ...
08/29/2006
7079030Microwave sensor
A microwave sensor transmits a plurality of microwaves having different frequencies to a detection area and performs an object detecting operation based on reflected waves of the microwaves of an object present in the detection area. The microwave sensor includes ob...
07/18/2006
7034745Radar apparatus equipped with abnormality detection function
Disclosed is a radar apparatus equipped with a function for detecting an FM-AM conversion noise peak. When the direction of radiation is swept, any peak whose level remains substantially unchanged is judged to be a peak due to FM-AM conversion noise. Further, when F...
04/25/2006
7023377Noise modulated remote distance measurement
The invention relates to remote distance measurement by means of a transmitted noise modulated probing signal (E), whereby at least one of a distance (Y(t)) and a velocity (V(t)) in relation to a signal transceiver (200) is determined. The probing of signal (...
04/04/2006
6972710Automotive 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
6956521Radar device for detecting a distance and relative speed of an object
A radar device includes a mixer that mixes an output of a transmit antenna 4 and an input of a receive antenna 6, an LPF 8, an A/D converter 9 that samples an output signal of the LPF 8 and subjects the sampled signal to A/D conver...
10/18/2005
6940347Amplifier
A re-circulating amplifier comprising a SAW filter with group delay characteristics for providing a time delay function. ...
09/06/2005
6933878Wide 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
6930631Sensor front-end with phase coding capability
A sensor front end for an electronic radar sensor is disclosed that provides for a lower parts count while providing technical functionality by using multifunction parts, i.e., parts that are used both in transmitting and receiving. The sensor front end includes a c...
08/16/2005
6924762Radar 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
6906661Object-detecting system for vehicle
In an object-detecting system using an FM-CW wave, points f1 to f4 corresponding to detection peaks of a reflected wave from a road-side object such as guardrail and points m1 and m2 corresponding to detection peaks of a reflected wave fr...
06/14/2005
6795012Radar for detecting a target based on a frequency component
In a radar, a coupler extracts a part of a transmission signal as a local signal and a mixer mixes a reception signal from a circulator and the local signal so as to output an intermediate frequency signal which is the frequency difference between the transmission s...
09/21/2004
6778129Crossover detection method, radar apparatus and crossover detection program
The crossover detection method of a radar apparatus according to the present invention calculates distance/relative velocity information at a multitude of different clock times, using a beat signal; calculates predicted distance/relative velocity information indicat...
08/17/2004
6756933Radar system and characteristic adjustment method thereof
A radar system and a characteristic adjustment method for the radar system are provided, in which a control voltage waveform of a voltage controlled oscillator for frequency-modulating a sending signal can be set in a short time without increasing the required amoun...
06/29/2004
6703967Distance 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
6703966Method 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
6650272Radar system and method
A method for exciting an antenna with a waveform having a burst width and pulse width scaled proportionately with a selected range scale and a temporal filter to address any ambiguities in range resulting from the transmission of a signal in accordance wi...
11/18/2003
6614388Sensor array having a pulse echo radar
A sensor array with a pulse echo radar system with which a carrier signal of a microwave transmitter oscillator is transmitted in the form of pulses with a specified pulse repetition frequency in a transmission window. This radar signal is reflected from ...
09/02/2003
6611225Radar signal processing apparatus, and method of measuring distance and speed
A radar signal processing apparatus has a range gate for extracting range gate data sequences from a memory, a first frequency extraction section which extracts a beat frequency corresponding to a target by performing frequency analysis by FFT at a low co...
08/26/2003
6320531FM-CW radar system for measuring distance to and relative speed of target
An FM-CW radar is provided which may be employed in anti-collision systems or cruise control systems installed in moving objects such as automotive vehicles. The radar analyzes a beat signal in frequency to produce peak frequency components in a modulated...
11/20/2001
6292129Structure 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
6229474Radar apparatus
A radar apparatus is comprised of; transmitting means for outputting a transmission electromagnetic wave; receiving means for IQ-phase-detecting a reception electromagnetic wave received when a transmission electromagnetic wave is reflected from a target ...
05/08/2001
6204803Radar apparatus
A radar apparatus is comprised of: receiving means for IQ-phase-detecting a reception electromagnetic wave received when a transmission electromagnetic wave is reflected from a target object and returned from the target object; signal converting means for...
03/20/2001
6072422FM-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
6040796Radar 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
6018309Radar data processing method and radar apparatus using the same
A radar data processing method of switching a continuous wave consisting of up phase and down phase into a transmission signal and a local signal in an interrupted manner and using a beat signal between the local signal and a reception signal. The method ...
01/25/2000
5963163Method 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
5905458FM radar apparatus
An FM radar apparatus detects a distance to and/or a speed of a target not only from peak frequencies of beat signals in respective frequency rise and fall regions but also by reusing the peak frequency in the preceding frequency rise or fall region. As a...
05/18/1999
5757308Radar 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
5751241Method 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
5731778FM-CW radar apparatus for measuring relative speed of and distance to an object
An FM-CW radar which is suitable for automotive anti-collision systems, for example, is provided. This radar outputs a radar signal in the form of a triangular wave whose frequency is increased at a given rate and decreased at a given rate. A receiver rec...
03/24/1998
5696515System and method for determining absolute vehicle height and ground speed
A system and method for determining absolute vehicle height and ground speed. As disclosed, a millimeter wave radar system for determining selected boundary distances is implemented based upon a generation of a modulated millimeter wave signal which is en...
12/09/1997
5483242Method 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
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