| 利用非GEO卫星进行地面站时间同步研究 |
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| 引用本文： | 朱利伟,文援兰,刘峰,潘汪华.利用非GEO卫星进行地面站时间同步研究[J].上海航天,2010,27(6):61-64. |
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| 作者姓名： | 朱利伟 文援兰 刘峰 潘汪华 |
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| 作者单位： | [1]国防科学技术大学航天与材料工程学院,湖南长沙410073 [2]中国卫星海上测控部,江苏江阴214431 |
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| 摘 要： | 根据地球静止轨道（GEO）卫星转发同步信号的双向时间比对法实现站间时间同步的基本原理,提出了利用拟合非GEO卫星转发信号的伪距实现时间同步的新方法。拟合伪距法消除了传播路径延迟和只能使用GEO卫星作为信号转发器的限制,扩大了双向时间比对的应用范围。仿真结果表明：该法有较高的精度,满足工程要求。
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| 关 键 词： | 时间同步 时间比对 修正伪距 最小二乘 钟差 |
Research on Ground-Ground Time Synchronization Via Non-GEO Satellite |
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| ZHU Li-wei,WEN Yuan-lan,LIU Feng,PAN Wang-hua.Research on Ground-Ground Time Synchronization Via Non-GEO Satellite[J].Aerospace Shanghai,2010,27(6):61-64. |
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| Authors: | ZHU Li-wei WEN Yuan-lan LIU Feng PAN Wang-hua |
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| Institution: | 1(1.College of Aerospace and Material Engineering,NUDT,Changsha Hunan 410073, China;2.China Satellite Maritime Tracking and Controlling Department,Jiangyin Jiangsu 214431,China) |
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| Abstract: | A new way using qusai-polynomial to fit the pseudo-range which transmitted by non-GEO satellite was put forward according to the principle of the two-way time and frequency transfer with GEO satellite for time synchronization between satellite base stations in this paper.The limitation that only the GEO satellite would be used for the two-way time and frequency transfer for eliminating the path delay was eliminated by the new fitting pseudo-range method which expanded the usage scope by breaking the GEO limitation.The simulation results showed that the new method was with high precision,which met the requirement in the engineering. |
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| Keywords: | Time synchronization Time and frequency transfer Revised pseudo-range Least square estimation Clock error |
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