RADAR

摘要

An FM-CW radar for detecting the relative distance or speed of a target from the frequency of peaks caused by the same target and appearing in the frequency spectrum of a beat signal in the uplink modulating section and the downlink modulating section, wherein the moving speed of a mobile, e.g. a vehicle, mounting the radar is measured and the frequency difference of the peaks appearing in the frequency spectrum of the beat signal in the uplink modulating section and the downlink modulating section, corresponding to its stationary object, is counted back ward and then a pair corresponding to the frequency difference is extracted preferentially.