Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Patent
1991-09-06
1993-02-23
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
342101, 342114, G01S 1360
Patent
active
051894262
ABSTRACT:
A Doppler control circuit for a CW or pulse Doppler radar system for monitoring not only the phase shift between echo signals from several targets but also the amplitude difference between the several targets and to further tune the radar to a particular target among one or more targets from which echo signals return. The control circuit can be used in state of the art CW or pulse Doppler type radar systems. In a further system, a special circuit is provided for conditioning selected portions of the Doppler frequency spectrum to attenuate or de-emphasize portions of the echo signal corresponding to selected targets in the radar system environment, such as rain or stationary wayside objects, in order to give such echo signals less weight in determining roadway hazards.
REFERENCES:
patent: 3176294 (1965-03-01), Merlo et al.
patent: 3576564 (1971-04-01), Galvin
patent: 3742497 (1973-06-01), Sato et al.
patent: 4129856 (1978-12-01), Humphries et al.
patent: 4236140 (1980-11-01), Aker et al.
Asbury Jimmie
Davis John W.
Barron Jr. Gilberto
IVHS Technologies, Inc.
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