BDS-3卫星钟在轨性能评估与分析  

Performance evaluation and comparison of on-orbit satellite clocks for BDS-3

作　　者：毛悦 宋小勇[1,2] 张清华 阮仁桂[1,2] 王龙 MAO Yue;SONG Xiaoyong;ZHANG Qinghua;RUAN Rengui;WANG Long(State Key Laboratory of Geo-Information Engineering,Xi'an 710054,China;Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,China;Army Engineering University,Nanjing 210014,China)

机构地区：[1]地理信息工程国家重点实验室,陕西西安710054 [2]西安测绘研究所,陕西西安710054 [3]陆军工程大学,江苏南京210014

出　　处：《测绘学报》2023年第3期349-356,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(41774012);江苏省自然科学基金(BK20211233)。

摘　　要：目前,国际主要卫星导航系统搭载的原子钟包含铷钟、氢钟、铯钟3大类。新型国产星载铷原子钟、氢原子钟的应用是BDS-3相对于BDS-2的重要改变之一。BDS-3正式开通运行以来,已经积累了丰富的在轨数据,本文采用2 a的精密钟差数据评估了新型国产原子钟的在轨性能,并与国际主流星载原子钟的性能进行对比,分析了国产原子钟在轨长期演化规律。结果表明,北斗氢钟具有较低的在轨漂移率和较高的稳定度,与Galileo系统星载氢钟为同一精度水平,北斗铷钟在轨性能稳步提高,跻身世界先进行列。At present,the space-borne atomic clocks carried by major global satellite navigation systems mainly include rubidium atomic clocks,hydrogen atomic clocks and cesium atomic clocks.Compared with BDS-2,one of the important changes of BDS-3 is the application of new domestic space-borne rubidium atomic clocks and hydrogen atomic clocks.Since BDS-3 was officially put into operation,large amounts of data have been accumulated.In this paper,two years of precise clock offset data is used to verify the on-orbit performance of the new domestic atomic clock.And the performances are compared with the mainstream space-borne atomic clocks of GNSS.The long term variation characteristic of BDS-3 atomic clocks are analyzed.It's showed the BDS-3 hydrogen atomic clocks have a smaller drift rate and better stability which close to the performance of Galileo clock,and the performance of onboard rubidium atomic clocks of BDS-3 is improving continually which is up to the world advance level.

关 键 词：星载原子钟 在轨性能评估 准确度 漂移率 稳定度 

分 类 号：P228[天文地球—大地测量学与测量工程]