GPS卫星信号的捕获算法研究  

Research on the GPS Satellite Signal Acquisition Algorithm

作　　者：张北帆 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《电子科技》2017年第2期30-32,共3页Electronic Science and Technology

基　　金：全国大学生科技创新重点基金资助项目(201310252012)

摘　　要：捕获能够帮助接收机初始化跟踪环路并开始跟踪信号,捕获的好坏对定位有较大影响。文中对L1频段的GPS信号进行定位研究,分别研究了传统的串行搜索卫星捕获过程,讨论了基于分段FFT的脉冲信号捕获算法。仿真结果表明,基于分段FFT的脉冲信号捕获算法在高信噪比时效果更好。The capture of the signal helps the receiver to initialize the tracking loop and start tracking of the sig- nal. This paper discusses the localization of GPS signals of L1 band by the traditional serial search satellite acquisi- tion process and by the subsection - FFT - based pulse signal acquisition algorithm, respectively. The simulation re- suits show that the subsection - FFT - based pulse signal acquisition algorithm has better performance with a high sig- nal - to - noise ratio.

关 键 词：GPS卫星 C/A码 捕获算法 分段FFT算法 

分 类 号：TN967.1[电子电信—信号与信息处理] P228.4[电子电信—信息与通信工程]