| 基于星间距离变化的动态双向时间同步算法 |
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| 引用本文： | 黄飞江, 卢晓春, 吴海涛, 边玉敬. 基于星间距离变化的动态双向时间同步算法[J]. 武汉大学学报 ( 信息科学版), 2010, 35(1): 13-16. |
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| 作者姓名： | 黄飞江 卢晓春 吴海涛 边玉敬 |
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| 作者单位： | 1中国科学院国家授时中心,西安市书院东路3号710600;2中国科学院精密导航定位与定时技术重点实验室,西安市书院东路3号,710600;3中国科学院研究生院,北京市玉泉路甲19号,100039;4长沙学院电子与通信工程系,长沙市洪山路98号,410003 |
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| 基金项目： | 国家自然科学基金资助项目(40673011); 中国科学院“西部之光”人才培养计划资助项目; 中国科学院精密导航定位与定时技术重点实验室开放研究基金资助项目(2009PNTT07); 湖南省教育厅科学研究基金资助项目 |
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| 摘 要： | 以卫星双向时间同步算法为基础,分析了运动卫星之间的双向时间同步信号传播延迟随星间距离的变化特点,推导了按此算法计算得到的卫星钟差随星间距离的变化规律,提出了一种利用星间伪距拟合多项式和钟差拟合多项式联合求解高精度星间钟差的卫星动态双向时间同步算法。实际卫星的仿真数据表明,该算法能够把星间的时间同步误差控制在5 ns以内,可用于星间高精度时间同步。
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| 关 键 词： | 卫星通信 星间链路 星间距离 动态双向时间同步 星间钟差 |
| 收稿时间： | 2009-11-11 |
| 修稿时间： | 2009-11-11 |
An Algorithm of Dynamic Two-way Time Transfer Based on Intersatellite Range Variation |
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| HUANG Feijiang, LU Xiaochun, WU Haitao, BIAN Yujing. An Algorithm of Dynamic Two-way Time Transfer Based on Intersatellite Range Variation[J]. Geomatics and Information Science of Wuhan University, 2010, 35(1): 13-16. |
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| Authors: | HUANG Feijiang LU Xiaochun WU Haitao BIAN Yujing |
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| Affiliation: | 1National Time Service Center,Chinese Academy of Sciences,3 East Shuyuan Road,Xi'an 710600,China;(2 Key Laboratory of Precision Navigation and Timing Technology,CAS,3 East Shuyuan Road,Xi'an 710600,China;3Graduate University of Chinese Academy of Sciences,A19 Yuquan Road,Beijing 100039,China;4Department of Electronics and Communication Engineering,Changsha University,98 Hongshan Road,Changsha 410003,China |
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| Abstract: | Presently The algorithm of two-way satellite time transfer is one of the time synchronization methods with the highest accuracy.On the basis of two-way satellite time transfer algorithm,the characteristics of the propagation delay of two-way time transfer signals between moving satellite varying with intersatellite range were analyzed,and the rule of satellite clock offset varying with intersatellite range obtained with this algorithm was deduced.This paper presents a dynamic two-way time transfer algorithm... |
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| Keywords: | satellite communication intersatellite link intesatellite range dynamic two-way time transfer(DTWTT) intersatellite clock offset |
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