Arrival direction estimation device, arrival direction estimation method and arrival direction estimation program

摘要

PROBLEM TO BE SOLVED: To estimate the arrival direction of an arrival wave with high accuracy even when there are a plurality of arrival waves. An arrival direction estimation device (1) includes a plurality of receiving antennas (20) for receiving an arrival wave, and an arrival direction estimation processor (30). The arrival direction estimation processor (30) calculates the range of the arrival direction of the arrival wave from the received signals of the plurality of receiving antennas (20) based on the DBF method, and with respect to the calculated range of the arrival direction. The arrival direction is calculated based on the MUSIC method. The arrival direction estimation processor (30) limits the reception signals of the plurality of receiving antennas (20) to the range of the arrival direction by the complex BPF, and MUSIC with respect to the reception signals of the limited plurality of reception antennas (20). Calculate the arrival direction by the method. [Selection diagram] Fig. 1