空间原子钟组管理的实现及影响因素分析

Realization and Influencing Factors Analysis of ACES Management

在多星构建的导航卫星星座系统中,建立空间原子钟组有利于提高系统的测量精度,提升系统自主运行能力。本文对目前国内外地面/空间原子钟组管理所采用的方法进行梳理总结,给出了单颗卫星或星座中不同卫星钟之间的空间原子钟组管理初步设计方案,该方案建立在星座系统中原子钟组的设计构想基础上。从空间原子钟组输出信号的产生、钟组信号的性能测量、原子钟异常的检测及处理等方面进行考虑,本文对影响星上钟组运行的关键技术及影响因素给出了分析建议,为BDS构建连续、可靠、稳定、准确的空间原子钟组运行体系提供技术基础。

In navigation satellites constellation comprised of multi-satellite,introducing an atomic clock ensemble in space is beneficial for improvement of its measurement accuracy and ability of autonomous operation.This paper summarizes the methods adopted currently at home and abroad towards atomic clock ensemble management in ground or in space and then proposes an initial design scheme of atomic clock ensemble in Space（ACES）management on a single satellite or among different satellite clocks within constellation which is based on the designing conception of atomic clock ensemble in navigation satellite constellation.Considering generation and characterize measurement of clock ensemble signal,anomaly detection and processing of atomic clock,this paper gives analysis and recommendation as for the key technologies and factors affecting ACES management,which will provide technical basis in designing a continuous,reliable,stable,accurate ACES running system for BeiDou navigation satellite system（BDS）project.