| 多种插值计算方法在卫星轨道计算中的应用 |
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| 引用本文： | 张晓,韩雪丽.多种插值计算方法在卫星轨道计算中的应用[J].测绘与空间地理信息,2018(1):119-120,125. |
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| 作者姓名： | 张晓 韩雪丽 |
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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： | 插值方法是获取卫星轨道任意历元卫星坐标的重要手段,对于GNSS导航中的多轨道实时导航计算问题,进行高精度测量时需要对精密星历进行轨道插值。目前应用较为广泛的插值方法包括拉格朗日法、牛顿多项式插值以及线性逐次内维尔插值方法。本文通过研究常见的插值方法,结合具体算例进行精度及时间的对比分析,并对牛顿插值进行改进,得出结论:牛顿插值经加窗处理后卫星位置误差精度可达mm级。它的计算效率大约是拉格朗日插值及内维尔插值方法的10倍。
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| 关 键 词： | 卫星轨道 朗格朗日插值 牛顿插值 内维尔插值 satellite orbit Lagrange interpolation Newton interpolation Neville interpolation |
Application of Several Interpolation Methods in the Calculation of Satellite Orbit |
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| ZHANG Xiao,HAN Xueli.Application of Several Interpolation Methods in the Calculation of Satellite Orbit[J].Geomatics & Spatial Information Technology,2018(1):119-120,125. |
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| Authors: | ZHANG Xiao HAN Xueli |
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| Abstract: | Interpolation method is an important means for satellite orbit satellite coordinates of any epoch for the computation of multi orbit real-time navigation in GNSS navigation,the high precision measurement need to track the precise ephemeris interpolation. At present, the widely used interpolation methods include Lagrange method, Newton polynomial interpolation and linear successive Nev-ille interpolation method. Through the study of common interpolation method, and comparative analysis with the examples of precision and time, and the Newton interpolation is improved. The following conclusions can be drawn:the accuracy of the satellite position er-ror can reach mm level after the addition of the Newton interpolation method. Its computational efficiency is about 10 times of Lagrange interpolation and Neville interpolation method. |
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