| 基于动力学轨道拟合的LEO卫星轨道预报精度分析 |
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| 引用本文： | 王友存,郭金运,夏要伟,孔巧丽.基于动力学轨道拟合的LEO卫星轨道预报精度分析[J].全球定位系统,2018,43(4):59-66. |
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| 作者姓名： | 王友存 郭金运 夏要伟 孔巧丽 |
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| 作者单位： | 山东科技大学 测绘科学与工程学院,山东青岛 266590 |
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| 摘 要： | 轨道预报是地球探测卫星顺利执行科学任务的一个重要环节。为了实现对低轨卫星长弧段、高精度的轨道预报,文中运用动力学轨道拟合的方法进行轨道预报。选用GRACE A卫星、HY 2A卫星和JASON 2卫星为例进行预报处理,分析了卫星的轨道高度和拟合弧长对轨道预报结果的影响。结果表明,GRACE A卫星预报4 h和8 h轨道的3D RMS分别优于3 m和10 m,HY 2A卫星和JASON 2预报4 h轨道的3D RMS分别优于2 dm和1 dm,24 h轨道预报结果3D RMS分别优于2.5 m和2 m.
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| 关 键 词： | 低轨卫星 轨道预报 动力学拟合 |
Accuracy Analysis of LEO Satellite Orbit Prediction Based on Dynamic Fitting Method |
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| Institution: | College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao 266590, China |
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| Abstract: | The orbit prediction plays a significant role in the scientific mission of remote sensing satellite. To obtain the long period and high precision orbit prediction, the orbit forecast is performed by a dynamic fitting method. To analyze the effect of orbital height and different fitting arc lengths on the accuracy of orbit forecast, the data of the GRACE A satellite,HY A satellite, Jason 2 satellite are used as examples. From the results, it is concluded that the prediction orbit of 3D RMS of 4 h and 8 h arc length of GRACE A satellites,the results are better than 3 m and 10 m respectively; for HY 2A and Jason 2 the 4 h arc length prediction results are less than 2 dm and 1 dm separately, 24 h arc length prediction results are better than 2.5 m and 2 m respectively. |
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