GPS软件接收机基带信号处理算法及验证  

Algorithm and Verification of Baseband Signal Processing for GPS Software Receiver

作　　者：刘瑞华[1] 孔月明[1] 蔚保国[2] 邢兆栋[2] 

机构地区：[1]中国民航大学电子信息工程学院,天津300300 [2]中国电子科技集团公司第54研究所,石家庄050081

出　　处：《航天控制》2016年第1期3-8,共6页Aerospace Control

基　　金：民航安全能力建设项目"北斗机载设备技术标准规定与应用研究"(AADSA0007);中央高校基本科研业务费中国民航大学专项"基于北斗的通用航空指挥监控系统"(20001006);中电科54所新技术研究高校合作项目"通航机载GNSS终端完好性技术研究"(KX14260033)

摘　　要：主要研究基于数据块的GPS软件接收机基带信号处理流程和算法,包括对载波和伪码的捕获和跟踪过程,并解调出导航电文数据。利用实际接收到的卫星信号数据,结合MATLAB软件平台,对GPS软件接收机基带信号处理过程的各个环节进行仿真验证。结果表明,所研究的基带信号处理算法能较好的捕获卫星信号,可准确跟踪载波信号和伪码序列,能正确解调出导航数据。同时验证了该算法在软件接收机系统中应用的可行性,并为开发实时GPS接收机奠定了基础。In this paper, the baseband signal processing flow and algorithm for GPS software receiver based on a data block are studied, including the acquiring and tracking of carrier and pseudo-code as well as de- modulating the navigation data. The MATLAB software platform is used to simulate and validate each link of the baseband signal processing for GPS software receiver based on the actual received satellite signal. During the experiment, the satellite signal can be preferably acquired by using this algorithm researched, the carrier and pseudo-code can be accurately tracked and the navigation data can be correctly demodula- ted. Furthermore, the feasibility of its application in the software receiver system is verified, it also can serve as the reference for the development of real-time GPS software receiver.

关 键 词：GPS软件接收机 捕获 跟踪 仿真验证 可行性 

分 类 号：TN967.1[电子电信—信号与信息处理]