Anti-collision vehicular radar system

摘要: A radar system mounted on a vehicle and having an RF signal transmitted preferably in confined beam front of the reflected from obstacles path to be back vehicle. The includes asymmetrical magic tee which receives both received signals provides pair Doppler frequency whose relative phase relationship determines whether is opening or closing signal. employs diplex detection scheme for providing range rate data. Under imminent collision situation control power means pulsating brakes thereby avoid collision. To minimize false target detections provide discrimination, there provided this gated circuit detecting normal rates amplitude that operable primarily fast such as may occur when stopped roadway. ground speed detector has output analog voltage usable gain circuits. also with inhibiting braking action below predetermined use slow traffic, altering at speeds above order 35 MPH.