Multichannel radar system for motor vehicles

Details Multichannel radar system for motor vehicles Multichannel radar system for motor vehicles

1995-11-09

1997-04-01

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Return signal controls external device

Radar mounted on and controls land vehicle

342 82, 342 85, 342 86, G01S 1393

Patent

active

056170980

ABSTRACT:
A multichannel radar system for use on a motor vehicle has a plurality of transmission and reception channels each composed of an AM or FM signal generator for generating an AM or FM signal including a carrier which is amplitude- or frequency-modulated by a modulation signal, transmission and reception antennas for radiating the generated AM signal and receiving a return signal reflected by an obstacle, an amplifier for amplifying the received return signal, and either a detector for detecting the amplified return signal or a mixer for mixing the amplified return signal with the FM signal generated by the FM signal generator thereby to generate a beat signal. A power supply circuit supplies DC voltages respectively to the AM or FM signal generators and the amplifiers of the respective transmission and reception channels in a time-division multiplex manner at successive times. A processor calculates a distance up to the obstacle based on either the phase difference between the detected return signals and the modulation signals or the frequencies of the beat signals in the respective transmission and reception channels.

REFERENCES:
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patent: 5302956 (1994-04-01), Asbury et al.
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patent: 5369409 (1994-11-01), Urabe et al.
patent: 5493302 (1996-02-01), Woll et al.
patent: 5512901 (1996-04-01), Chen et al.
patent: 5530447 (1996-06-01), Henderson et al.

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