ELECTRIC WAVE ARRIVAL DIRECTION ESTIMATING DEVICE, ELECTRIC WAVE ARRIVAL DIRECTION ESTIMATING PROGRAM, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide an electric wave arrival direction estimating device capable of estimating a position of a transmission source of electric wave at a high speed and with a high precision; and also to provide an electric wave arrival direction estimating program and a recording medium. SOLUTION: An FFT section 502 generates a frequency spectrum of a received signal of the arrival wave received by a plurality of antennas. A spectrum determining section 503 identifies the arrival wave included in the frequency spectrum by comparing signal levels. An estimating section 504 of the number of arrival waves estimates the number of arrival waves in the frequency band in which the arrival wave is detected. An arrival wave direction estimating section 505 estimates the arrival direction of the arrival wave using the MUSIC (Multiple Signal Classification) method. COPYRIGHT: (C)2007,JPO&INPIT