METHOD OF DETERMINING MULTIPATH SIGNAL RELIABILITY, METHOD OF CALCULATING CODE PHASE ERROR, METHOD OF CALCULATING CODE PHASE, METHOD OF CALCULATING POSITION, AND MULTIPATH SIGNAL RELIABILITY DETERMINING DEVICE

摘要

PROBLEM TO BE SOLVED: To propose a new scheme for determining the quality of a multipath signal.SOLUTION: A mobile phone 1 calculates a correlative value, by executing correlation operation processing for multiplying a received signal by a replica code, the received signal acquired by receiving a GPS satellite signal transmitted from a GPS satellite and the replica code generated by a replica code generator. A PL value is calculated, by using a peak correlative value found by the operation processing and the correlation value of a phase lagging by M (1≤M<2) chips from a peak phase showing the peak correlation value; and for cases where the received signal is a multipath signal, the reliability of the multipath signal is determined based on the calculated PL value.