| 基于EGM2008地球重力场模型的GPS高程转换研究 |
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| 引用本文： | 谢用,范东明.基于EGM2008地球重力场模型的GPS高程转换研究[J].四川测绘,2010(5):204-208. |
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| 作者姓名： | 谢用 范东明 |
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| 作者单位： | 西南交通大学土木工程学院,四川成都610031 |
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| 摘 要： | 综合利用EGM2008地球重力场模型,采用＂移去-拟合-恢复＂方法和二次曲面函数数值逼近算法进行GPS高程转换。通过某隧道实例验证了＂移去-拟合-恢复＂的有效性和实用性,检验了EGM2008地球重力场模型的精度。通过计算比较,在测区范围内,合理选择均匀分布的GPS/水准点,可以使高程拟合精度达到最大。
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| 关 键 词： | EGM2008地球重力场模型 移去-拟合-恢复 二次曲面函数拟合 GPS高程转换 |
Study on GPS Height Transformation Based on EGM2008 |
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| XIE Yong,FAN Dong-ming.Study on GPS Height Transformation Based on EGM2008[J].Surveying and Mapping of Sichuan,2010(5):204-208. |
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| Authors: | XIE Yong FAN Dong-ming |
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| Institution: | (School of Civil Eng.,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Utilizing EGM2008 earth gravity model,using remove-polish-restore method and quadric approximation approach for GPS height transformation.Then,the author verified the effectiveness and practicality of the remove-polish-restore method though a tunnel project,as well as the precision of EGM2008 earth gravity model.In addition,we obtained that it can acquire the maximum height transformation accuracy by reasonable choice of GPS/Leveling points in the area though calculating and comparing. |
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| Keywords: | EGM2008 Remove-polish-restore quadric function fitting GPS height transformation |
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