Radar device

摘要

A radar receiver has plural antenna system processors each for performing coherent integration on the basis of correlation values between a reception signal and a transmission signal using correction amounts for phase variations corresponding to plural Doppler frequencies, plural correlation matrix generators for generating, for each of the plural different Doppler frequencies, correlation matrices which are pieces of phase difference information relating to an arrangement of reception antennas on the basis of sets of outputs of the coherent integration, respectively, an adder for adding together outputs of the plural correlation matrix generators, and an incoming direction estimator for estimating an incoming direction of reflection waves on the basis of outputs of the adder.

主权项

1. A radar device comprising:
a radar transmitter that converts a transmission signal into a high-frequency transmission signal and transmits the high-frequency transmission signal from a transmission antenna; and a radar receiver that estimates an incoming direction of reflection waves which are produced as a result of reflection, by a target, of the high-frequency transmission signal on the basis of the reflection waves using plural reception antennas, wherein the radar receiver includes:
plural antenna system processors, each of which performs coherent integration on the basis of correlation values between a reception signal and the transmission signal using correction amounts for phase variations corresponding to plural different Doppler frequencies;plural correlation matrix generators that generate, for each of the plural different Doppler frequencies, correlation matrices which are pieces of phase difference information relating to an arrangement of the plural reception antennas on the basis of sets of outputs of the coherent integration, respectively;an adder that adds together outputs of the plural correlation matrix generators; andan incoming direction estimator that estimates the incoming direction of the reflection waves coming from the target on the basis of outputs of the adder.