摘要
随着卫星共视时间比对方法的广泛应用,国际咨询委员会发布了扩展的时间传递标准,即CGGTTS V2E。根据CGGTTS V2E新标准的具体要求,进行了详细的理论研究和实验验证,并采用软件仿真算法对接收机输出的实测数据进行共视比对处理,实现了GPS和BDS双系统兼容的、新型的共视时间比对和传递算法。仿真结果表明,在短基线共视比对测试中,基于GPS和BDS的单颗卫星的共视时间比对精度均优于1.5ns,达到国内领先水平。
With the wide application of satellite common-view time comparison method,the International Advisory Council published an extended standard of time transfer,namely,CGGTTS V2 E.According to the specific demand of new standard of CGGTTS V2 E,this paper carried out detailed theoretical research and experiment.Meanwhile,the algorithm of software simulation was applied to the common-view comparison of the measured data outputted by the receiver,so that new common-view time comparison and transmission algorithm that was compatible with GPS and GLONASS dual system was realized.Following conclusion can be drawn from simulation results.In the short baseline common-view comparison test,the accuracy of common-view time comparison of single satellite based on GPS and BDS is better than 1.5 ns.It reaches a leading level in China.
作者
刘旭
赵当丽
LIU Xu;ZHAO Dang-li(National Time Service Centre,Chinese Academy of Sciences,Xi'an Shanxi 710600,China;Key Laboratory of Time and Frequency Primary Standards,National Time Service Center,Chinese Academy of Sciences,Xi'an Shanxi 710600,China;Graduate University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《计算机仿真》
北大核心
2019年第5期300-304,共5页
Computer Simulation
关键词
共视
时间传递
算法
仿真
Common view
Time transfer
Algorithm
Simulation
