OBJECT DETECTION DEVICE AND METHOD

摘要

PROBLEM TO BE SOLVED: To divide a detection range. SOLUTION: A bandpass filter passes a beat signal from a mixer being generated based on a reflection wave being reflected from an object that exists in a zone A-2 out of regions where a detection range 111 is divided into three parts as shown in the figure by utilizing a principle where the frequency of a reflection wave being reflected by the object is determined based on the distance to the object. The bandpass filter is realized by a filter for passing the frequency of a reflection wave being reflected from the zone A-2.