METHOD FOR DETECTING POSITION OF MOBILE STATION AND POSITION DETECTION SYSTEM FOR BASE STATION AND MOBILE STATION

摘要

PROBLEM TO BE SOLVED: To make it possible to highly accurately measure the position of a mobile station by executing 2nd processing by using plural 1st processing results found out by respective base stations and detecting the position of the mobile station. ;SOLUTION: A common receiving signal is supplied from a synchronism acquisition part 18 to three synchronous follow-up parts 20 to 22 to supply propagation time data p1 to p3 indicating the generation timing of a spread code part sequence to respective synchronous follow-up parts 20 to 22. The follow-up part 20 finds out a correlation value between the receiving signal and the spread code part sequence of the generation timing while over-sampling data and obtains highly accurate propagation time data H1. the follow-up parts 21, 22 also similarly found out highly accurate propagation time data H2, H3. Respective up-down counters 23 to 25 obtain respective counter values CV1 to CV3 in accordance with these data H1 to H3. A shortest time detection circuit 26 simply compares these three counter values CV1 to CV3 and selects the shortest counter value. The selection means the selection of data providing the shortest propagation time out of the three data H1 to H3.;COPYRIGHT: (C)2000,JPO