【摘要】 本文对GPSL1软件接收机的捕获跟踪算法进行了研究。GPS信号的捕获分别采用时域滑动相关捕获方法和频域快速捕获算法,通过分析比较认为频域快速捕获算法计算量大为减少;在GPS信号跟踪中,采用非相干延迟锁定环(DLL),锁相环(PLL)实现对GPS信号的跟踪。更多还原

【Abstract】 In this paper we investigate the signal acquisition and tracking algorithms for GPS L1 frequency C/A code software receiv-er. The acquisition of GPS signal individually employs time domain serial search and frequency domain parallel search by FFT algo-rithm. Analysis result shows that frequency domain acquisition by FFT algorithm has a much less computation load. Non-correlated DLL and PLL are used in the GPS signal tracking.更多还原