| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To effectively reacquire satellite signals with extremely weak signal levels. <P>SOLUTION: Highly sensitive correlation processing with a 20-ms correlator 51 and an M-times NC adder 52 is performed for a plurality of code phase candidates C1, C2, ..., Ck generated by a satellite signal generator 4, using a most probable predicted frequency Fp0 calculated by a frequency predictor 23, to enable a simultaneous parallel search through the plurality of code phase candidates C1, C2, ..., Ck. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
