Radar system and azimuth estimation method

A radar system comprising:

• a plurality of transmitting antennas,
• a plurality of receiving antennas,
• an azimuth estimation unit configured to estimate an azimuth of a target based on a first received signal received by a virtual array, wherein the virtual array comprises the plurality of transmitting antennas and the plurality of receiving antennas,
• a restoration unit configured to calculate a second received signal from a mode matrix and an estimated power of the first received signal in the azimuth estimated by the azimuth estimation unit, assuming that a transmitting azimuth of the plurality of transmitting antennas is the same as an arrival azimuth of the first received signal, wherein the second received signal corresponds to a signal restored from the first received signal,
• an error calculation unit configured to calculate errors from the first received signal and the second received signal, and
• a false azimuth determination unit that determines that the azimuth estimated by the azimuth estimation unit is a false azimuth in response to the errors being calculated by the error calculation unit are larger than a set determination threshold.