초록 ▼

A signal processing unit detects the azimuthal direction of a target in accordance with the phase difference between signals received by two receiving antennas. Then, by sequentially switching plural transmitting antennas having mutually different beam directions with a switching device, received si

A signal processing unit detects the azimuthal direction of a target in accordance with the phase difference between signals received by two receiving antennas. Then, by sequentially switching plural transmitting antennas having mutually different beam directions with a switching device, received signals are obtained using each of the transmitting antennas.

대표청구항 ▼

[ What is claimed is:] [1.]1. A radar device, comprising:a plurality of sequentially switchable transmitting antennas having mutually different transmission beam directions configured to radiate a radio wave;a plurality of receiving antennas configured to receive signals reflected from a target, wit

[ What is claimed is:] [1.]1. A radar device, comprising:a plurality of sequentially switchable transmitting antennas having mutually different transmission beam directions configured to radiate a radio wave;a plurality of receiving antennas configured to receive signals reflected from a target, with reference to the radio wave radiated from the plurality of transmitting antennas; andan azimuthal direction detection device configured to detect an azimuthal direction of the target on the basis of a phase difference or an amplitude difference between the signals received with the plurality of receiving antennas,wherein the azimuthal direction detection device includes a decision device configured to determine the azimuthal direction of the target from the phase difference between the signals received with the plural receiving antennas, and configured to decide that the detected azimuthal direction of the target is true when it substantially coincides with the azimuthal direction obtained with radio waves from the transmitting antennas having the transmission beam whose azimuthal direction approximates to the detected azimuthal direction of the target.