| 一种GPS精密星历的多项式插值方法 |
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| 引用本文： | 陈兆林,朱彦武,张书毕.一种GPS精密星历的多项式插值方法[J].工程勘察,2008(4). |
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| 作者姓名： | 陈兆林 朱彦武 张书毕 |
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| 作者单位： | 中国矿业大学环境与测绘学院;黑龙江省煤田地质物测队; |
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| 摘 要： | 本文介绍了用多项式内插计算GPS卫星坐标和钟差的方法,并以拉格朗日多项式为例利用IGS跟踪站给出的精密星历作为实例运用MATLAB进行编程计算,分析了Runge现象对拉格朗日多项式内插精度的影响,给出了拉格朗日内插法得到的卫星坐标和钟差的误差与多项式阶数、插值间隔的关系。
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| 关 键 词： | 精密星历 拉格朗日多项式 Runge现象 卫星坐标 钟差 |
A Polynomial Interpolation Method for GPS Precise Ephemeris |
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| Chen Zhaolin et al..A Polynomial Interpolation Method for GPS Precise Ephemeris[J].Geotechnical Investigation & Surveying,2008(4). |
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| Authors: | Chen Zhaolin |
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| Abstract: | This paper describes an algorithm for Lagrange Polynomial interpolation of GPS satellite coordinates and clock error,and its implementation in MATLAB.It analyzes the effect of Runge phenomenon on the Lagrange Polynomial interpolation and the relations among satellite coordinates and clock errors calculated by Lagrange polynomial interpolation with different orders of polynomial as well as fit intervals. |
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| Keywords: | precise ephemeris lagrange polynomial Runge phenomenon satellite coordinates clock error |
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