基于3σ法的卫星共视时间传递算法设计

摘要

As one of the high precision time transfer technology,satellite Common-view algorithm has the advantages of simple equipment,low cost and continuous operation. In this paper,based on the detailed a-nalysis of the work process of the data in the satellite time transfer equipment,the paper puts forward the use of Letts criterion to solve the data processing,to solve the problem caused by the model,and reduce the burden of the system data processing. Through the verification of the measured data,the algorithm is simple and practical,greatly reducing the root mean square error of the station clock,improving the accu-racy of the time comparison.%卫星共视算法作为高精度时间传递技术之一,具有设备简单、成本低廉和可连续运行等优点.在详细分析卫星共视时间传递设备中的数据工作过程的基础上,提出了利用莱特准则对数据进行处理,以解决由模型所带来的残差问题,同时减轻系统数据处理的负担.通过对实测数据的验证,该算法简单实用,大大减低了站间钟差的均方根值,提高了时间比对精度.