GPS软件接收机捕获跟踪算法研究与仿真  

Acquisition and Tracking Method in GPS Software Receiver

作　　者：徐敏[1] 翟传润[1] 战兴群[1] 张炎华[1] 

机构地区：[1]上海交通大学,上海200030

出　　处：《微计算机信息》2007年第28期180-181,251,共3页Control & Automation

基　　金：上海市科技攻关计划重大项目支持(课题编号:05dz15006)

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。In this paper we investigate the signal acquisition and tracking algorithms for GPS L1 frequency C/A code software receiver. The acquisition of GPS signal individually employs time domain serial search and frequency domain parallel search by FFT algorithm. 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.

关 键 词：GPS 捕获 FFT 跟踪 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]