摘要
远距离、高精度的时间同步对SDH通信网、电力系统调控和卫星导航系统等有着极其重要的意义.在深入研究双星定位导航系统与GPS共视授时理论的基础上,提出了采用双星系统共视授时技术实现远距离、高精度时间同步方法,给出具体的计算模型、误差分析、实验平台、数据处理和仿真.实验结果表明,双星系统共视授时技术可以达到15 ns的授时精度,能够实现远距离、高精度的时间同步.
The long distance, high precision time synchronization is very important for SDH communication net, control of electric power system and satellite navigation system, etc. Based on the study of double-star positioning navigation system and GPS common-view time service theory, long distance, high precision time synchronization method is proposed by using common-view time service method of double-star system. The calculation model, error analysis , experimental platform, data processing and simulation are given. The result of experimentation indicates that common-view time service method of double-star system can reach 15 ns precision of time service and realize long distance, high precision time synchronization.
出处
《应用科技》
CAS
2007年第2期41-44,共4页
Applied Science and Technology
关键词
双星系统
共视接收机
授时
double-star system
common-view receiver
time service
