| 基于阶次组合的GPS精密星历插值研究 |
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| 引用本文： | 王晓明,成英燕,刘立.基于阶次组合的GPS精密星历插值研究[J].大地测量与地球动力学,2011,31(4):103-106. |
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| 作者姓名： | 王晓明 成英燕 刘立 |
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| 作者单位： | 中国测绘科学研究院,北京 100039 |
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| 基金项目： | 国家基础测绘项目(B2551) |
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| 摘 要： | 采用Lagrange插值与线性逐次Neville插值两种方法对GPS卫星轨道进行了插值，比较了两种方法的特性及插值精度，结果表明两种方法虽然简单易实现，但当进行高阶插值时，边缘插值区间的精度较低。为解决该问题提出利用高次插值与低次插值相结合的方法进行轨道插值，算例证明，该插值方法可以改善插值精度。
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| 关 键 词： | GPS 精密星历 Lagrange插值 Neville插值 不同阶次 |
RESEARCH ON GPS PRECISE EPHEMERIS INTERPOLATION BASED ON HIGH/LOW ORDERS INTEGRATED |
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| Wang Xiaoming,Cheng Yingyan,Liu Li.RESEARCH ON GPS PRECISE EPHEMERIS INTERPOLATION BASED ON HIGH/LOW ORDERS INTEGRATED[J].Journal of Geodesy and Geodynamics,2011,31(4):103-106. |
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| Authors: | Wang Xiaoming Cheng Yingyan Liu Li |
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| Institution: | Chinese Academy of Surveying & Mapping，Beijing 100039 |
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| Abstract: | Both the characteristics of Lagrange interpolation and Neville interpolation are compared with each other.It is concluded from the results that the high-order interpolation is not good enough for high-precise applications.Finally,a new interpolation method which based on high/low orders to solve this problem is put forth. |
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| Keywords: | GPS precise ephemeris Lagrange interpolation Neville interpolation different orders |
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