| 北斗卫星在轨原子钟稳定性分析 |
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| 引用本文： | 孟祥广,孙越强,杜起飞,白伟华,张绍成,柳聪亮,夏俊明.北斗卫星在轨原子钟稳定性分析[J].大地测量与地球动力学,2016,36(7):574-576. |
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| 作者姓名： | 孟祥广 孙越强 杜起飞 白伟华 张绍成 柳聪亮 夏俊明 |
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| 摘 要： | 使用IGS MEGX发布的北斗卫星精密钟差数据，利用哈达玛方差公式对目前所有在轨健康北斗卫星钟的稳定性进行分析。结果表明，北斗卫星钟在1 a的跨度内比较稳定；其300 s稳定性量级为10-13，但是各颗卫星并不完全相同；北斗卫星钟与GPS卫星钟的稳定性对比显示，北斗卫星钟稳定性介于GPSⅡR-M与GPSⅡF上搭载的铷钟之间。
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| 关 键 词： | 北斗导航卫星系统 原子钟 哈达玛方差 稳定性分析 |
Stability Analysis of Atomic Clocks Onboard the Beidou Satellites |
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| MENG Xiangguang,SUN Yueqiang,DU Qifei,BAI Weihua,ZHANG Shaocheng,LIU Congliang,XIA Junming.Stability Analysis of Atomic Clocks Onboard the Beidou Satellites[J].Journal of Geodesy and Geodynamics,2016,36(7):574-576. |
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| Authors: | MENG Xiangguang SUN Yueqiang DU Qifei BAI Weihua ZHANG Shaocheng LIU Congliang XIA Junming |
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| Abstract: | The atomic clocks onboard navigation satellites provide the reference frequency for the navigation signals, and the stability of the clock will directly influence the accuracy of timing and positioning performance. In this paper, the IGS MEGX clock products for Beidou satellites are used for analysis,and the Hadamard variance is used to calibrate the clock stability of all orbiting Beidou satellites. The results show that the clocks onboard Beidou satellites are relatively stable over 1 year’s analysis; and the Hadamard variance is about 10-13 on 300 s interval with slight differences between different Beidou satellites. Compared with GPS satellite clocks, the stability performance is between those of GPS ⅡR-M and GPS ⅡF satellite clock performance. These results are beneficial for navigation and positioning users. |
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| Keywords: | Beidou navigation satellite system atomic clock Hadamard variance stability analysis |
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