Patent ID: 8866668

Claim:
A radar apparatus comprising: a transceiver operating in a first detection mode to transmit and receive a radio-wave signal having a frequency that changes at a predetermined first rate of change, and operating in a second detection mode to transmit and receive a radio-wave signal having a frequency that changes at a predetermined second rate of change, the first rate of change being different from the second rate of change; a beat-signal generator generating a beat signal based on the radio-wave signals transmitted and received by the transceiver; a peak extractor performing frequency analysis on the beat signal generated by the beat-signal generator to thereby extract, from a result of the analysis, peak signal components each having a peak in signal-intensity; a target information generator generating, based on the peak signal components extracted by the peak extractor, information about a target that reflects the radio-wave signal; and a noise-wave determiner determining mixing of a noise wave if there is a set of peak signal components in the peak signal components extracted by the peak extractor in the first detection mode and a peak signal component in the peak signal components extracted by the peak extractor in the second detection mode, the set of peak signal components meeting a predetermined matching condition including at least frequency matching.