GPS L1信号C/A码的高效并行软件相关器研究  

Research on High-performance Parallel Correlator for C/A Code of GPS L1 Signal

作　　者：刘银锋[1] 陈小惠[1] 李传君[1] 刘晖[1] 

机构地区：[1]南京邮电大学自动化学院,南京210003

出　　处：《舰船电子工程》2010年第7期84-86,共3页Ship Electronic Engineering

基　　金：国家科技支撑计划项目(编号:2008BAJ11B01)资助

摘　　要：为了能快速、准确地跟踪所捕获到的卫星,在分析传统GPS软件接收机跟踪算法的基础上,采用了一种用于处理CDMA扩频信号的软件相关器高效并行算法,该算法主要针对耗时较多相关器进行优化。实际运行结果和性能分析表明了文章提出的优化算法优于直接浮点计算,将软件相关器的处理速度提高了约3倍。In order to track the acquired satellite fast and accurately,with the simple analysis of correlator in traditional GPS software receiver,an efficient parallel algorithms for processing code-division multiple-access（CDMA） spread spectrum signals has been adoptd.The objective of the algorithms is optimizing the software correlators which are time consuming.The experimental results indicate that the optimization methods presented by this paper are approximately 3 times faster than straight floating-point operations.

关 键 词：GPS 相关器 软件接收机 实时性 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]