| 摘要 |
<p>A GPS receiver includes a GPS block (1) for performing position measurement based on a signal transmitted from a GPS satellite to update a navigation message and repeating standby and startup thereof. An external clock block (2) holds frequency information and time information of a high accuracy and outputs a start signal to the GPS block (1), which is in a standby state, based on the frequency information and the time information held therein. A frequency measurement block (3) measures a frequency offset which is a displacement of a frequency oscillator (12) of the GPS block (1) with reference to the frequency information held in the external clock block and outputs information of the measured frequency offset to the external clock block (2) . GPS position measurement can be performed stably and rapidly without the necessity to wait for periodical time information from a GPS satellite and power consumption is minimized also with a minimized position measurement time through the selection of an optimum time interval between intermittent receptions of GPS signals. <IMAGE></p> |
