长基线高精度时间频率传递技术的综合应用

针对同步网络内长基线分布的节点,实现高精度时间与频率无线传递的方法主要包括双向卫星时间频率传递法(TWSTFT)与GPS共视法(CV)两种卫星技术手段.介绍了这两种技术的工作原理,分析了误差环节,比较了两种技术手段,在此基础上指出,这两种技术手段都属于远距离传递,都易受外界环境和传输链路影响,因此建议实际应用中这两种方式应该是独立运行、交叉互验的必要技术手段,需要综合利用,而并非一般认为的二选一竞争关系.

Combination Implementation of High Accuracy Time and Frequency Transfer Technique over Long Baseline

For nodes distributed over long baseline in synchronous network, there are two ways for high accuracy time and frequency transfer, including two-way satellite time and frequency transfer (TWSTFT) and GPS common view(CV). The operation principles are introduced, the error is analysed, and comparison between the two methods are made.On this base,it is concluded that long baseline transfer will be easily effected by disadvantage of radio link and environment. It is pointed out that these two methods are not competitors but cooperators, so they are both necessary in practical application,and should be implemented independently and combinedly.