| IGS精密星历文件的读取及内插方法研究 |
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| 引用本文： | 柳迪,逢淑涛,董绪荣.IGS精密星历文件的读取及内插方法研究[J].全球定位系统,2011,36(5):46-48,64. |
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| 作者姓名： | 柳迪 逢淑涛 董绪荣 |
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| 作者单位： | 装备指挥技术学院,北京,101416 |
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| 摘 要： | 利用matlab软件编程实现了精密星历文件的读取及信息筛选。在GPS精密单点定位的过程中,需要比国际全球导航卫星系统服务（IGS）组织提供的15min更小的精密星历时间间隔的观测数据,介绍了拉格朗日和牛顿两种插值方法,对IGS精密星历进行了内插,并对插值的结果进行对比分析,得到了一些有益的结论。
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| 关 键 词： | 精密星历文件 内插 拉格朗日（Lagrange）插值 牛顿（Newton）插值 |
Read of Precise Ephemeris File and Research on Methods of Interpolation |
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| LIU Di,PANG Shu-tao,DONG Xu-rong.Read of Precise Ephemeris File and Research on Methods of Interpolation[J].Gnss World of China,2011,36(5):46-48,64. |
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| Authors: | LIU Di PANG Shu-tao DONG Xu-rong |
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| Institution: | LIU Di,PANG Shu-tao,DONG Xu-rong(Equipment College of Command and Technology,Beijing 101416,China) |
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| Abstract: | This article had completed the read and information calendar of precise ephemeris file by using Matlab.In the process of PPP,it needs to observe data of precise ephemeris whose time interval is less than 15 min,so two methods of interpolation are introduced in the article: Lagrange and Newton.Insert in the precise ephemeris,and comparative analysis on the results of interpolation,so that we can get some beneficial conclusions. |
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| Keywords: | Precise ephemeris file interpolation Lagrange Newton |
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