Method for avoiding unwanted echo signals and automotive radar e

Details Method for avoiding unwanted echo signals and automotive radar e Method for avoiding unwanted echo signals and automotive radar e

1975-12-22

1977-04-05

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343112CA, G01S 904

Patent

active

040165663

ABSTRACT:
An automotive radar is provided with a device for sensing the location of the entry and exit ways of a zone as the vehicle passes therethrough to reduce the detectable range of the radar upon the vehicle entering the zone so that false targets within the range-controlled zone are discriminated from valid targets. The device restores the range upon the vehicle leaving the zone to normal range.

REFERENCES:
patent: 2996137 (1961-08-01), Chu et al.
patent: 3689882 (1972-09-01), Dessailly
patent: 3735398 (1973-05-01), Ross
patent: 3952303 (1976-04-01), Watanabe et al.

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