GPS信号捕获跟踪算法研究与验证  

Research and Validation of Acquisition and Tracking Algorithms for GPS Signal

作　　者：瞿洋 李豹[2] 王丛侠 

机构地区：[1]南海舰队,湛江524000 [2]海军工程大学导航工程系,武汉430033

出　　处：《舰船电子工程》2017年第8期39-42,共4页Ship Electronic Engineering

摘　　要：GPS信号的捕获与跟踪是软件接收机的重要环节。研究了GPS信号的并行码相位搜索捕获算法和基于延迟锁相环(DLL)和科斯塔斯(Costas)锁相环两个环路的跟踪算法,通过信号采样器采集实际GPS信号,利用下变频得到的中频信号对捕获跟踪算法进行了验证,结果表明该算法能够有效地捕获跟踪实际GPS信号。The acquisition and tracking of GPS signal are two important section of GPS software receiver.This paper studies the acqusition and tracking algorithms of GPS signal, in which Parallel code phase search acquisition and tracking algorithms based on DLL and Costas phase lock loop are implemented, then validates the acqusition and tracking algorithms with digitized intermediate frequency signal from GPS signal sampler. The result proves that the algorithms can acquisite and track the real GPS signal efficiently.

关 键 词：GPS软件接收机 并行码相位搜索 捕获 跟踪 

分 类 号：TN966.4[电子电信—信号与信息处理]