BDS与GPS/GLONASS星载原子钟性能的比较分析  

Performance Analysis of Atomic Clocks on Board BDS/GPS/GLONASS Satellites

作　　者：张清华[1,2] 王源[1] 孙阳阳[1] 陈正生[3] 

机构地区：[1]解放军理工大学国防工程学院,江苏南京210007 [2]地理信息工程国家重点实验室,陕西西安710054 [3]第二炮兵工程大学,陕西西安710025

出　　处：《海洋测绘》2015年第2期62-64,68,共4页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41274016);地理信息工程国家重点实验室开放研究基金(SKLGIE2013-M-2-1)

摘　　要：针对北斗卫星导航系统(BDS)在轨卫星原子钟的评估问题,从三个性能指标即准确度、漂移率和稳定性出发进行了评估,并利用同一时段的GPS/GLONASS星载原子钟性能评估结果做了比较。算例采用GPS 1751-1758共8周的数据,评估结果发现:BDS在轨卫星的准确度在10-11量级,漂移率在10-15量级,与GPS/GLONASS星载原子钟的水平相当,但钟的稳定性方面由于BDS存在着几颗天稳较大的钟,所以其天稳的平均值在10-13量级,比GPS和GLONASS卫星略差。For assessment of BDS satellite clocks,this paper assesses the performance using the accuracy,drift and stability,which is compared with GPS / GLONASS clock performance in the same period. The example uses a total of eight weeks of GPS 1751-1758 data,and the assessment results showthat BDS satellite accuracy is in the order of 10-11 and the drift is in the order of 10-15,which are at the same level of atomic clocks on board GPS / GLONASS satellites. But the stability of the clocks is bad due to the existence of stable larger clocks of BDS,and it is in the order of 10-13.

关 键 词：北斗卫星导航系统 原子钟 评估 准确度 漂移率 稳定性 

分 类 号：P228[天文地球—大地测量学与测量工程]