北斗接收模块授时精度恶化问题研究  

Research on the problem of Beidou receiver module timing accuracy deterioration

作　　者：刘洪源[1] 吴安国 

机构地区：[1]中国卫星海上测控部,江阴214431

出　　处：《电子测量技术》2017年第11期133-137,共5页Electronic Measurement Technology

摘　　要：简要介绍了北斗接收模块的工作原理,结合使用现状,采用故障树分析法,对北斗接收模块授时精度恶化问题进行分析研究。经分析可知问题原因在于,模块接收通道无法自动释放而达到饱和,无法继续捕获卫星。通过升级基带算法软件,增加接收通道释放函数的方法,能有效解决特殊环境下捕获卫星的问题,并通过测试验证了该方法的正确性和可行性,为提高北斗接收模块工作的稳定性,实现岸船时间同步、满足海上测控任务要求提供了可靠的保障。该问题的解决,对北斗接收模块的推广应用具有重要的意义。This article briefly introduces the working principle of the Beidou receiver module. Combined with the use of Beidou receiver module, using the fault tree analysis method, this article analysis and researches on the problem of Beidou receiver module timing accuracy deterioration. After analysis, the reason for the problem is that the receiving channel of the module can not automatically release, which results in the receiving channel reach saturation so that can not continue to capture the satellite. By upgrading the baseband algorithm software, the method of increasing releasing function of the receiving channel can effectively solve the problem of capturing the satellite in the special environment, The correctness and feasibility of the method is verified by testing, which finally improve the stability of Beidou receiver module, achieve time synchronization between shore and ship, and provide reliable protection to the requirements of tracking and control tasks aboard. The solution of this problem is of great significance to the popularization and application of Beidou receiving module.

关 键 词：北斗 授时精度 基带算法 接收通道 

分 类 号：TN966.4[电子电信—信号与信息处理]