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Received:July 06, 2015 Revised:September 06, 2015
Received:July 06, 2015 Revised:September 06, 2015
中文摘要: 北斗B1I信号的捕获是北斗2代接收机的核心模块,它是基于码相位和多普勒频移二维搜索的过程.对于捕获模块,通常采用并行码相位搜索捕获算法来实现对空中可见卫星的捕获.针对信号较弱情况下的卫星捕获,采用了非相干累加与并行码相位搜索捕获相结合的方法.测试结果表明,该捕获算法能够有效快速地实现弱信号的捕获.
Abstract:BeiDou B1I signal acquisition is a hard core in a BeiDou receiver and is the two-dimension process of the search about the code delay and Doppler frequency. For acquisition, parallel search algorithm of code in frequency domain are usually adopted. For the acquisition of weak signal, a method combining non-correlation integration with parallel search algorithm of code in frequency domain was introduced. The test results show that the acquisition algorithm can effectively and quickly acquire the weak signal.
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王丽黎,杨阳.北斗B1I信号的捕获算法.计算机系统应用,2016,25(3):194-198
WANG Li-Li,YANG Yang.Acquisition Algorithm of BeiDou B1I Signal.COMPUTER SYSTEMS APPLICATIONS,2016,25(3):194-198
王丽黎,杨阳.北斗B1I信号的捕获算法.计算机系统应用,2016,25(3):194-198
WANG Li-Li,YANG Yang.Acquisition Algorithm of BeiDou B1I Signal.COMPUTER SYSTEMS APPLICATIONS,2016,25(3):194-198
