GNSS软件接收机中匹配滤波器算法  

Research on MF algorithm in GNSS receiver

作　　者：李辉[1] 何秋生[2] 程亚奇[3] 

机构地区：[1]中国矿业大学(北京)机电学院,北京100083 [2]太原科技大学电子学院,山西太原030024 [3]中国科学院微电子研究所,北京100029

出　　处：《辽宁工程技术大学学报（自然科学版）》2009年第1期77-79,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家高技术研究发展计划子课题J基金资助项目(2005AA1Z1192);山西省高校科技开发基金资助项目(2007141)

摘　　要：为了适应全球卫星导航定位系统接收机的发展趋势,针对GNSS系统不同信号,研究了一种联合多个星座卫星信号的软件匹配滤波器捕获算法。通过对算法的分析,给出了影响算法复杂性的两个因素:接收序列伪码长度和本地复现序列数,并通过仿真给出了捕获GPS和伽利略开放信号可以使用的最佳复现序列数。仿真结果表明,对不同的GNSS信号,只要通过软件配置算法中的复现序列数,就可以以最小的计算复杂性来捕获相应信号。这对软件接收机中匹配捕获算法的设计有重要的指导意义。In order to adapt to the development trend of GNSS receiver, a new MF algorithm is studied, which can acquire the multiple GNSS signals and is used in the software receiver. Firstly the detailed algorithm is introduced and two factors are given that affect the computation complexity. Through the simulation two best numbers are given for acquiring the GPS Coarse code and Galileo OS. The simulation results show the number of replica sequence in .the algorithm could be set to acquire the different signals. The conclusion has a guiding significance for designing the software GNSS receiver.

关 键 词：全球卫星导航定位系统 软件接收机 匹配滤波器 

分 类 号：TN957.51[电子电信—信号与信息处理]