| 基于插值理论的GRACE卫星精密轨道内插的研究 |
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| 引用本文： | 施斌,罗佳.基于插值理论的GRACE卫星精密轨道内插的研究[J].测绘信息与工程,2011,36(6):4-7. |
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| 作者姓名： | 施斌 罗佳 |
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| 作者单位： | 1. 武汉大学测绘学院
2. 武汉大学测绘学院／武汉大学地球空间环境与大地测量教育部重点实验室,武汉市珞喻路129号,430079 |
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| 基金项目： | 国家自然科学基金资助项目(40804004,40637034);国家“863计划”资助项目(2007ZZ120603) |
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| 摘 要： | 利用GRACE卫星高采样率精密轨道,进行了拉格朗日插值、牛顿插值和线性插值方法的研究,并对插值结果进行了比较和分析,探讨了插值方法的插值精度及其应用于低轨卫星轨道内插的适用性。
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| 关 键 词： | 新一代重力卫星 精密轨道内插 拉格朗日插值 牛顿插值 线性插值 |
An Interpolating Study of Orbit of Satellite GRACE Based on Interpolation Theory |
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| SHI Bin,LUO Jia.An Interpolating Study of Orbit of Satellite GRACE Based on Interpolation Theory[J].Journal of Geomatics,2011,36(6):4-7. |
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| Authors: | SHI Bin LUO Jia |
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| Institution: | 1,2(1 School of Geodesy and Geomatics,Wuhan University; 2 Laboratory of Geospace Environment and Geodesy,Wuhan University,129 Luoyu Road,Wuhan 430079,China) |
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| Abstract: | Two polynomial interpolation methods—Lagrange interpolation and Newton interpolation,as well as Linear interpolation for high-sampling rate and precise orbit which is provided by The Ohio State University are discussed.Besides,the interpolation results are compared and analyzed.The precision and applicability of orbit interpolation for LEO satellite is discussed.The results indicate that Lagrange interpolation and Newton interpolation can produce the same precision level at 1 cm or better in position.Three methods are all appropriate for interpolation of velocity. |
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| Keywords: | GRACE precise orbit interpolation Lagrange interpolation Newton interpolation linear interpolation |
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