CORRELATION DETECTION CIRCUIT, CORRELATION DETECTION METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a technique for improving correlation detection accuracy by effectively utilizing a correlator.;SOLUTION: A correlation detection circuit 2 includes a code determination section 300 for determining a replica signal from C/A codes of a plurality of patterns set in advance and a plurality of correlation processing sections 4 for executing correlation processing between a data signal including signals transmitted from a plurality of satellites and the replica signal determined by the code determination section 300. Each of the correlation processing sections 4 generates the replica signal, a progress signal whose phase progresses by a correlation width control value more than the replica signal and a delay signal whose phase delays by the correlation width control value more than the replica signal and determines a first correlation value 92 between the data signal and the progress signal and a second correlation value 93 between the data signal and the delay signal. The correlation detection circuit 2 further includes a correlation width setting section 302 for changing the correlation width control value in each of the correlation processing sections 4.;COPYRIGHT: (C)2013,JPO&INPIT