Radar apparatus for detection position information of a target by receiving reflection signals reflected by the target with a plurality of reception antennas

摘要

A radar apparatus includes a DBF process portion for grouping reception signals over plural channels into plural groups and performing DBF on each group, a summing portion for summing amplitudes or power of frequency components obtained by the DBF performed by the DBF process portion on each group, a peak detecting portion for detecting a peak frequency of a signal of the electric wave reflected by a target from results of the summation at the summing portion, a distance/speed calculating portion for calculating the distance and speed of the target based on the peak frequency, and an angle calculating portion for extracting a frequency component of the peak frequency detected by the peak detecting portion to calculate the angle of the electric wave reflected by the target. Thus, the amount of DBF calculation can be reduced, and a highly accurate positional information of the target can be obtained.