一种简单快速的GPS信号捕获方法  

A Simple and Fast Method for GPS Signal Acquisition

作　　者：陈迅[1] 袁星星[1] 

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212003

出　　处：《电讯技术》2013年第2期182-187,共6页Telecommunication Engineering

基　　金："北斗"二代卫星接收机双频基带芯片研制项目(BE2009121)~~

摘　　要：结合一般的GPS信号捕获算法,提出了一种更为简单快速的GPS信号捕获方法。此方法在1 023个码片时间约1 ms,可以完成一颗卫星在一个多普勒频移下的全码捕获检测。FPGA仿真表明,与传统的捕获方法相比,所提方法减少了资源消耗与时间消耗,同时保证了能在一个C/A码周期内获取一个多普勒频移下的C/A码相位,捕获更简单快速。Based on popular GPS signal acquisition methods, a simple and fast method is proposed. In about 1 ms, the method can complete a whole-code detection and acquisition of one satellite in a Doppler frequency shift. FPGA simulation shows in comparison with the traditional acquisition methods this method not only reduces the consumption of resources and time, but also ensures that a Doppler frequency shift of the C/A code phase is obtained in a C/A code period. The acquisition is more simple and fast.

关 键 词：GPS信号捕获 全码捕获 串行搜索捕获 并行搜索捕获 

分 类 号：TN911[电子电信—通信与信息系统] TN96[电子电信—信息与通信工程]