一种天地一体时间基准建立模式的思考

Thinking about the established model of timereference of integrative space-ground

随着低轨卫星导航系统、卫星物联网、远程时间比对等技术的发展,分布广泛的原子钟资源为构建天地一体时间基准提供了基础条件。根据原子钟位置不同,可将时间基准建立模式分为地面时间基准和天地一体时间基准。介绍各种模式的框架结构、设备构成、运行机制,分析了各种模式的异同。从数据融合、数据预处理、守时算法、实时信号控制等4个方面梳理了关键技术,为时间基准建立提供研究切入点。

With the technological development of the low Earth orbit(LEO)navigation satellite system,the internet of things by satellite,remote time transfer,etc.The basic conditions for building time reference of integrative space-ground ware provided by the atomic clock resources which widely distributed.According to the difference in the position between atomic clocks,the established model of time reference can be divided into time reference of ground and time reference of integrative space-ground.The frame structure,equipment composition and operation mechanism of various modes of the time reference were introduced,and the similarities and differences of various modes were analyzed.By considering the technology of data fusion,the technology of data preprocessing,the time-keeping algorithm and the technology of real-time signal adjusting control,the key technologies were sorted out to provide a research entry point for the establishment of time reference.