MILLIMETER-WAVE RADAR EQUIPMENT

摘要

PURPOSE:To prevent millimeter-wave radar equipment from becoming unstable in distance and speed due to the fluctuation of the peak frequency of measured beat signals caused by noise, etc. CONSTITUTION:The radar equipment which finds the distance to a target and moving speed of the target from transmitted and received signals of continuous- wave radar which are frequency-modulated with triangular waves is equipped with storing sections 55 and 59 which store the ascending- and descending-side frequencies of past beat signals. In addition, the radar equipment is also equipped with reference value forming sections 56 and 60 which use the mean values of the frequencies of the beat signals stored in the sections 55 and 59 and comparing sections 57 and 61 which discriminate whether or not the frequencies of the beat signals fall in a prescribed range against the reference values from the sections 56 and 60 so as to eliminate fluctuating data.