| 摘要 |
PURPOSE: A satellite navigation signal tracking apparatus, a position data acquisition apparatus, and a satellite navigation signal tracking method are provided to improve a tracking function of a satellite navigation signal in a jamming environment. CONSTITUTION: A satellite navigation signal tracking apparatus is comprised of the followings: a plurality of individual signal trackers(131a-131n) which respectively receive a plurality of baseband signals and track a satellite navigation signal; and an error extractor(136) which is combined with a plurality of individual signal trackers and extracts tracking errors from the tracking result of the plurality of individual signal trackers. If the satellite navigation signal tracking is successfully performed among the plurality of individual signal trackers, the individual signal trackers which are not available for the satellite navigation signal tracking perform the error correction and the signal tracking function at the same time, based on an error value which is extracted from the error extractor. [Reference numerals] (132a,132b,132b) Frequency corrector; (133a,133b,133n) Synchronization corrector; (134a,134b,134n) Correlator; (135a,135b,135n) Local synchronization error extractor; (136) Frequency error extractor; (137) Integration code synchronization error extractor; (AA) Frequency; (BB,DD,FF) Data/correlator; (CC,EE,GG) Delay value; (HH) Synchronization value |
