| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To allow a timepieces of a base station, which cannot directly receive radio waves of a main station for timepiece setting, to be corrected in a wireless positioning system. <P>SOLUTION: The wireless positioning system comprises one main station M for transmitting a timepiece setting synchronous signal to set timepieces of base stations S2, S3, which are a plurality of base stations of the wireless positioning system, one or a plurality of relay stations R which receive the synchronous signal transmitted from the main station M or the other base stations and transmit the synchronous signal to the other base stations S2, S3, and the base stations S2, S3 which receive the synchronous signal transmitted by the main station M or the relay station R. In a positioning server of the wireless positioning system, correction processing is performed for setting the timepieces of the base stations S2, S3 by the timepiece of the main station M on the basis of the synchronous signal. The receiving time of radio waves from a mobile terminal P is corrected. On the basis of the corrected time, the position of the mobile terminal P is calculated by TDOA. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
