Patent ID: 7884756

Claim:
A radar apparatus transmitting through a transmission antenna a radio wave whose frequency is modified in a temporally increasing and decreasing manner, and receiving a reflected radio wave from a target object through a plurality of reception antennas, the radar apparatus comprising: a calculation device which calculates a relative speed and an azimuth angle of the target object and a distance between the target object and the radar, based on a beat signal generated by mixing a transmission wave with a reception wave for each of a plurality of reception antennas, wherein, if two azimuth angles are obtained for a given target object that has been detected, the calculation device performs an other-signal detection processing in which, among other detected target objects, there is searched a target object whose azimuth angle is the same as any one of the two azimuth angles and whose beat frequency upon frequency-increasing modification or frequency-decreasing modification is the same as that of the given target object; and in the case where, through the other-signal detection processing, another target object that satisfies the condition is detected, the calculation device eliminates the azimuth angle, out of two azimuth angles of the detected given target object, which is equal to the azimuth angle of said another target object detected through the other-signal detection processing.