摘要
提出了一种基于内插滤波器的全数字非相干二元鉴相延迟锁相环(Delay Iocked loop,DLL),在分布式卫星地球站系统中实现各地球站与卫星的高精确伪码测距。在多址及AWGN条件下,对环路跟踪特性和测距精度进行了推导分析和计算机仿真。
A kind of full-digital noncoherent delay locked loop(DLL) based on interpolation is proposed. In a distributed satellite station system the high precision PN code ranging is realized. The characteristics of DLL and the ranging precision in the multiple access and addition white Gaussion noise (AWGN) environments are analyzed. Simulations demonstrate the good behavior of DLL and the high precision used in the satlellite ranging.
出处
《数据采集与处理》
CSCD
北大核心
2006年第B12期181-184,共4页
Journal of Data Acquisition and Processing
基金
国家863高技术发展计划(2005AA777010)资助项目。
关键词
直接序列码分多址
内插滤波器
延迟锁相环
伪码测距
direct sequence code division multiple address (DS-CDMA)
interpolation filter
delay locked loop
PN code ranging