BDS在轨卫星钟性能评估与对比  

Performance Evaluation and Comparison of BDS On-Orbit Satellite Clocks

作　　者：李平力 满丰[1] 熊帅[1] LI Pingli;MAN Feng;XIONG Shuai

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068

出　　处：《现代导航》2020年第2期100-104,共5页Modern Navigation

摘　　要：从卫星钟基本特性、频率稳定度、钟差预报精度等方面对BDS三种类型卫星钟(RAFS-1、RAFS-2、PHM)进行综合对比分析,结果表明:PHM卫星钟性能指标显著优于RAFS;RAFS-2卫星钟性能指标显著优于RAFS-1,频率稳定度指标和钟差预报精度提升了1倍左右,且RAFS-2卫星钟增加了相位连接功能,保证了在轨卫星钟在调整过程中不会影响时间频率服务。Comparing and analysis on the satellite clocks basic characteristics, frequency stability, and clock offset prediction accuracy of three types of BDS On-orbit Satellite Clocks, including RAFS-1, RAFS-2, and PHM. The results show that the performance index of the PHM clocks is significantly better than the RAFS. The performance index of the RAFS-2 clocks is significantly better than the RAFS-1, and the frequency stability and clock offset prediction accuracy is improved by about one times. Additionally, the RAFS-2 clocks adds the phase connection function, which can protect the satellite clock provide a continuous phase.

关 键 词：BDS 卫星钟 性能评估 对比 

分 类 号：P228.4[天文地球—大地测量学与测量工程]