Communications: directive radio wave systems and devices (e.g. – Radar ew – Detection of surveilance
Patent
1991-02-25
1992-01-21
Hellner, Mark
Communications: directive radio wave systems and devices (e.g.,
Radar ew
Detection of surveilance
G01S 740
Patent
active
050831291
ABSTRACT:
A police radar detector detects both the presence of radar signals incident upon a motor vehicle using the detector and also determines the direction of origin of the source of detected radar signals and signals the operator of the motor vehicle of the presence and source direction of the radar signals. Preferably, the radar detector includes two antennas with shared circuitry in a single housing. One of the antennas is directed generally toward the front of the motor vehicle and the other antenna is directed generally to the rear of the motor vehicle. As the police speed radar frequency bands are scanned or swept, each potential radar signal which is detected is processed to determine the direction of origin of the signals. To determine the direction of origin of incident radar signals, the signals are detected in both antennas with the signal strengths in the two antennas being compared to determine the direction of origin of the signals. It is preferred to identify the direction of the radar source as being to the front of the vehicle, to the rear of the vehicle or to the side of the vehicle. Empirically determined tables assist in the determination of thresholds for use in the detector to determine direction of the source of detected radar signals.
REFERENCES:
patent: 3660844 (1972-05-01), Potter
patent: 3956749 (1976-05-01), Magorian
patent: 4182990 (1980-01-01), Coffin et al.
patent: 4315261 (1982-02-01), Mosher
patent: 4404561 (1983-09-01), Malder et al.
patent: 4613989 (1986-09-01), Fende et al.
patent: 4622553 (1986-11-01), Baba et al.
patent: 4626857 (1986-12-01), Imazeki
patent: 4630054 (1986-12-01), Martinson
patent: 4633521 (1986-12-01), Liautaud
patent: 4668952 (1987-05-01), Imazeki et al.
patent: 4686499 (1987-08-01), Furnish
patent: 4692763 (1987-09-01), Gregg, Jr.
patent: 4700191 (1987-10-01), Manor
patent: 4719462 (1988-01-01), Hawkins
patent: 4725840 (1988-02-01), Orazietti
patent: 4750215 (1988-06-01), Biggs
patent: 4949088 (1990-08-01), Ryan et al.
patent: 5001777 (1991-03-01), Liautaud
New Snooper System Radar Detectors Advertisement, Sonaradar Advertisement.
Find the Hidden Radar Detector, Car and Driver, Mar., 1985, Csaba Csere and Don Sherman.
"Microwave Passive Direction Finding", A Wiley-Interscience Publication, Steven E. Lipsky, 1987.
Groth Clarence R.
Nusair Marwan E.
Scholl Stephen R.
Valentine Michael D.
Hellner Mark
Valentine Research, Inc.
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