| 全球位系数模型构建高精度局部重力场的Clenshaw求和 |
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| 引用本文： | 田晋,暴景阳,刘雁春.全球位系数模型构建高精度局部重力场的Clenshaw求和[J].武汉大学学报(信息科学版),2005,30(10):905-908. |
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| 作者姓名： | 田晋 暴景阳 刘雁春 |
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| 作者单位： | 海军大连舰艇学院海洋测绘系,大连市解放路667号,116018 |
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| 基金项目： | 武汉大学地球空间环境与大地测量教育部重点实验室开放研究基金资助项目(030406,1469903242330403)，国家测绘局测绘科技发展基金资助项目(20010102(214151926)) |
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| 摘 要： | 给出了勒让德函数4种模式的Clenshaw求和公式,在此基础上得到由全球位系数模型计算重力场参数的二阶Clenshaw求和公式,分析了EGM96与WDM94应用于某试验测区局部重力场的精度,为该测区在构建高精度局部重力场时初始全球位系数模型的选取提供了借鉴。
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| 关 键 词： | 全球位系数模型 Clenshaw求和 大地水准面差距 |
| 文章编号： | 1671-8860(2005)10-0905-04 |
| 收稿时间： | 2005-05-02 |
| 修稿时间： | 2005年5月2日 |
Clenshaw Summation in Constructing High Resolution Gravity Field from the Geopotential Coefficient Expression Model |
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| TIAN Jin,BAO Jingyang,LIU Yanchun.Clenshaw Summation in Constructing High Resolution Gravity Field from the Geopotential Coefficient Expression Model[J].Geomatics and Information Science of Wuhan University,2005,30(10):905-908. |
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| Authors: | TIAN Jin BAO Jingyang LIU Yanchun |
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| Institution: | 1 Department of Hydrography and Cartography, 667 Jiefang Road, Dalian 116018, China |
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| Abstract: | This paper gives four modes' Clenshaw summation formula of Lengendre function. Based on this, the Clenshaw summation formula with two order are derived respectively to calculate the gravity field parameters from the geopotential coefficient expression model. And the precisions in applying the EGM96 and WDM94 to the gravity field of some experimental survey area are both presented which provides some useful reference in the selection of preliminary geopotential model to construct high resolution gravity field of this local area. |
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| Keywords: | geopotential coefficient expression model Clenshaw summation geoid distance |
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