GPSL5并行码相位捕获算法仿真分析

摘要

GPS L5信号是GPS现代化中一个新的民用信号.基于此,从Galileo信号及其捕获算法的简单分析引入GPSL5信号并行码相位搜索的研究,并对GPS L5信号的捕获进行仿真分析.通过研究表明,在GPS L5并行码信号捕获中,双信道并行码相位搜索算法的捕获能力最强但计算量最大.pilot channel并行码相位搜索算法的计算量与data channel并行码相位搜索算法的计算量相同,但捕获能力比双信道并行码相位搜索算法强.%The GPS L5 is a very important civilian signal in the modernization of Global Positioning System(GPS). This paper simply introduces Galileo signal and its acquisition algorithms, and then GPS L5 signal acquisition based on the parallel code phase search is proposed to be simulated.It is shown that the acquisition algorithm of two-channel parallel code phase search performs the best ability to acquire GPS L5 signals, but it costs more time. And the acquisition algorithm pilot channel parallel code phase search costs the same time with that of the data channel parallel code phase search, but the ability to acquire signals is worse than that of the two-channel parallel code phase search.