The angle measurement device and the monopulse angle measurement device, the monopulse radar, the multiple

摘要

PROBLEM TO BE SOLVED: To provide a small scale angle measuring system accurately estimating an arrival angle of a desired wave even under interference of a multipath wave.;SOLUTION: The angle measuring system having: a plurality of receiving antennas receiving a plurality of incoming waves in an interference state; and receivers connected to the receiving antennas respectively, converts each received signal into a frequency spectrum, estimates a delay time of each of the incoming waves according to a super-resolution algorithm, by using the frequency spectrum of one of the received signals, also estimates a coefficient matrix mixed with the frequency spectrum of each of the incoming waves based on the estimated delay time, obtains an inverse matrix or a pseudo inverse matrix of the mixed coefficient matrix, and estimates the arrival angle of the incoming waves, based on an amplitude difference or a phase difference between components obtained by commonly multiplying the frequency spectrum of each of the received signals by the pseudo inverse matrix.;COPYRIGHT: (C)2011,JPO&INPIT