| BDS与GPS/GLONASS星载原子钟性能的比较分析 |
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| 引用本文： | 张清华,王源,孙阳阳,陈正生.BDS与GPS/GLONASS星载原子钟性能的比较分析[J].海洋测绘,2015(2):62-64. |
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| 作者姓名： | 张清华 王源 孙阳阳 陈正生 |
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| 作者单位： | 解放军理工大学国防工程学院;地理信息工程国家重点实验室;第二炮兵工程大学 |
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| 基金项目： | 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) |
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| 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。
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| 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 |
Performance Analysis of Atomic Clocks on Board BDS / GPS / GLONASS Satellites |
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| ZHANG Qinghu,WANG Yuan,SUN Yangyang,CHEN Zhengsheng.Performance Analysis of Atomic Clocks on Board BDS / GPS / GLONASS Satellites[J].Hydrographic Surveying and Charting,2015(2):62-64. |
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| Authors: | ZHANG Qinghu WANG Yuan SUN Yangyang CHEN Zhengsheng |
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| Institution: | ZHANG Qinghua;WANG Yuan;SUN Yangyang;CHEN Zhengsheng;College of Defense Engineering,Science and Technology University;State Key Laboratory of Geographic Information Engineering;The Second Artillery Engineering University; |
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| Abstract: | For assessment of BDS satellite clocks,this paper assesses the performance using the accuracy,drift andstability,which is compared with GPS / GLONASS clock performance in the same period.The example uses atotal of eight weeks of GPS 1751-1758 data,and the assessment results show that BDS satellite accuracy is inthe order of 10-11and the drift is in the order of 10-15,which are at the same level of atomic clocks on boardGPS / GLONASS satellites.But the stability of the clocks is bad due to the existence of stable larger clocks ofBDS,and it is in the order of 10-13. |
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