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| 无转发器式卫星轨道实时精确测量新方法 | |
| 引用本文： | 肖勇刚,桂有珍,刘亮,韩申生.无转发器式卫星轨道实时精确测量新方法[J].科学通报,2009,54(23):3669-3672. |
| 作者姓名： | 肖勇刚 桂有珍 刘亮 韩申生 |
| 作者单位： | 中国科学院量子光学重点实验室, 中国科学院上海光学精密机械研究所, 上海 201800; 华东师范大学精密光谱科学与技术国家重点实验室, 上海 200062 |
| 摘 要： | 卫星实时测轨|
光纤时间频率传递|
线性化迭代方法基于GPS定位原理提出了一种卫星轨道实时、精确测定的新方法. 该方法利用了光纤时间频率传递系统的高精度同步的优势, 在可实现位置精确已知的多个地面观测站间高精度时间同步的基础上, 由地面观测站连续向卫星发射测距信号, 并通过卫星上的信号接收和信号处理芯片实时解算出卫星的精确轨道. 由于该方法没有卫星转发时延等误差, 大大地提高了卫星轨道测定的实时性. 研究表明, 在实现地面站间100 ps级时间同步的基础上, 利用该方法获得更高的卫星轨道测距精度是完全可行的. 利用本方法同样可以得到卫星姿态测量的高精度. |
| 关 键 词： | 卫星实时测轨 光纤时间频率传递 线性化迭代方法 |
| 收稿时间： | 2009-08-18 |
A new method for real-time and accurate determi-nation of satellite orbits without transfer |
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| Institution: | 1 Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; 2 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China |
| Abstract: | Based on the GPS theory, a new method of real-time and accurate determination is proposed. This method makes use of the advantage of optical fiber transmission system, which has high-precision time and frequency synchronization. Several ground stations which are accurately time compared, transmit signals to the satellite continuously. The satellite could obtain the real-time and precise orbits of its own by the signal receiver and signal processing chip on the satellite. This method can attain the orbit position with less time, without the time for transferring signal back to the ground. Based on the realization of 100 ps-level time synchronization between stations, achieving higher measurement accuracy of satellite orbit is entirely feasible. This new method can also be used in high-precision satellite attitude measurement. |
| Keywords: | real-time satellite orbits determination time and frequence transfer by optical fiber linear iterative |
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