GPS在轨卫星原子钟的稳定性分析

Stability Analysis of the In-Orbit Satellite Atomic Clocks

导航卫星星载原子钟的相位或频率数据,作为导航系统应用研究的基础,将直接影响导航系统时间尺度建立以及定位的精度和准确性。本文针对由IGS官网提供的四种GPS卫星钟的钟差数据,采用修正阿伦方差进行了稳定性分析,得到了一些有益的结论。

As the application research basis of navigation system,the phase or frequency data of in-orbit satellite atomic clocks directly affect the precision and accuracy of navigation system.This paper analyzes the stability of four types of data of GPS satellite atomic clocks which is provided by the official website of IGS using Allan variance method and reaches some beneficial conclusions.