| 摘要 |
PROBLEM TO BE SOLVED: To correct the frequency offset of temperature-compensated quartz oscillator signal as a reference frequency generation source in a GPS receiver with a signal other than the 1pps clock signal obtained by demodulating the GPS reception wave. SOLUTION: The output frequency of DPLL54 of synchronization point, when the satellite received wave is demodulated by an SS demodulator 5 of the satellite receiver 10 of the GPS receiver 101, the frequency of the difference from a specified intermediate frequency of the satellite receiver 10 and the Doppler shift frequency of the satellite of the same channel, in a base station receiver 92 among base station information received with the base station receiver 92 are compared. Based on the difference in the frequency, the output frequency at the operation start of a fractional synthesizer 42a at the reception operation start is controlled that becomes the center frequency of a prescribed intermediate frequency signal of the satellite receiver 10. COPYRIGHT: (C)2006,JPO&NCIPI
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