摘要
星载多普勒无线电定轨定位系统(DORIS)是目前国际上先进的地基卫星轨道跟踪测量系统,时间同步是其完成测定轨的关键之一;对DORIS系统的时间体系、时间同步的基本原理和实现方法进行了分析,提出了一种利用轨道先验信息实现星地时间同步的方法,搭建了时间同步地面验证平台并完成了星地之间的时间同步的实验,结果表明采用该方法可以达到DORIS系统时间同步的精度;
Doppler Orbitography and Radio--positioning Integrated by Satellite （DORIS） is an advanced ground_ based satellites orbit tracking system at present, and the time synchronization is the key of the system to complete the mission of orbit measurement and determi- nation. The time system of DORIS, the fundamental concept and implement of the time synchronization are analyzed. A method using the in- formation of the orbit to complete the time synchronization is given. The ground _ based verification platform for the time synchronization is established, and the experiment is conducted on it. The experiments show that the accuracy requirement of the DORIS time synchronization can be satisfied by using that method. This paper completely expounds the workflows and implement of the DORIS time synchronization and has some reference meaning for the domestic study of DORIS and the building of the similar system.
出处
《计算机测量与控制》
2015年第12期4221-4224,4228,共5页
Computer Measurement &Control
