卫星导航系统星载钟时域频率稳定度探讨

介绍了四大卫星导航系统采用的时间系统,分析了频率标准的时域频率稳定度研究内容、研究方法,推导了其实用计算方法和公式,主要对近十年以来研究GNSS星载原子钟频率稳定度的测算数据进行了梳理和归纳总结,对比分析了各个导航系统星载原子钟的频率稳定度,综合数据表明大部分星载钟天稳均可达到10^(-14)量级,其中GPS星载铷钟和Galileo星载PHM钟稳定性最好。

Discussion on Time-Domain Frequency Stability of on-Board Clock in Satellite Navigation System

The time system adopted by the four major satellite navigation systems is introduced, the research content and research method of frequency standard time domain frequency stability are analyzed, and its practical calculation method and formula are deduced. The frequency stability of the satellite-borne atomic clocks of various navigation systems is compared and analyzed. The comprehensive data shows that most of the space-borne clocks can reach the order of 10-14. Among them, the GPS space-borne rubidium clock and Galileo The on-board PHM clock has the best stability.