| 基于移动站的转发式地面站设备时延标校方法 |
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| 引用本文： | 黄承强,杨旭海,李伟超,陈亮,曹芬,刘娅.基于移动站的转发式地面站设备时延标校方法[J].宇航计测技术,2019,38(3):48-53. |
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| 作者姓名： | 黄承强 杨旭海 李伟超 陈亮 曹芬 刘娅 |
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| 作者单位： | 1、中国科学院国家授时中心，西安 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 710600；3. 中国科学院大学天文与空间科学学院，北京 100012） |
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| 基金项目： | 国家自然科学基金资助项目（41604026），国家自然科学基金面上资助项目（11173026） |
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| 摘 要： | 在转发式卫星测定轨系统中，基于伪码测距原理的星地距离测量是实现卫星精密定轨和高精度时间比对的基础。为获得高精度的星地距离，需要将地面站设备时延从伪码测距值中精确扣除。在转发式卫星测轨原理的基础上，提出了基于移动站的转发式地面站设备时延标校方法，实现了对转发式地面站设备时延的标校，标校精度能够优于0.5ns，对提高转发式卫星定轨精度和卫星双向时间比对精度具有重要作用。
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| 关 键 词： | 转发式 移动站 设备时延 标校 |
A Calibration Method based on Portable Station for Equipment Time Delay of Ground Station for Transponder Ranging |
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| HUANG Cheng-qiang,YANG Xu-hai,LI Wei-chao,CHEN Liang,CAO Fen,LIU Ya.A Calibration Method based on Portable Station for Equipment Time Delay of Ground Station for Transponder Ranging[J].Journal of Astronautic Metrology and Measurement,2019,38(3):48-53. |
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| Authors: | HUANG Cheng-qiang YANG Xu-hai LI Wei-chao CHEN Liang CAO Fen LIU Ya |
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| Institution: | 1、National Time Service Center, Chinese Academy of Sciences, Xi'an, 710600, China;
2.、Key Laboratory of Precise Positioning and Timing Technology, Chinese Academy of Sciences, Xi'an, 710600, China; 3. School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 100012, China) |
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| Abstract: | In the system of orbit observation and determination via transponder, the range measurement between satellite and ground station based on the principle of pseudo ranging is the basis for precise satellite orbit determination and time comparison. In order to obtain the precise range measurement between satellite and ground station, we need to deduct the equipment time delay of ground station from the pseudo ranging value. On the basis of the observation principle of satellite for transponder ranging, a calibration method based on portable station for equipment time delay of ground station for transponder ranging is introduced, the equipment time delay of ground station for transponder ranging is calibrated based on this method, the results show that the accuracy of calibration can be better than 0.5 ns, meanwhile, the results play an important role in improving the accuracy of satellite orbit determination and two-way satellite time and frequency transfer (TWSTFT). |
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| Keywords: | Transponder ranging Portable station Equipment time delay Calibration |
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