| 基于加权法的地球重力场模型在GPS高程转换中的方法研究 |
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| 引用本文： | 喜文飞,史正涛,张鸣宇.基于加权法的地球重力场模型在GPS高程转换中的方法研究[J].甘肃科学学报,2013(4):36-38. |
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| 作者姓名： | 喜文飞 史正涛 张鸣宇 |
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| 作者单位： | [1]云南师范大学旅游与地理科学学院,云南昆明650500 [2]昆明市测绘研究院,云南昆明650051 |
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| 摘 要： | 在工程应用中，通常需要将GPS大地高转换为正常高，介绍了EGM2008地球重力模型以及高程转换方法，在该地球重力模型的基础上，以距离的倒数定权，提出了利用加权平均值法来求GPS高程转换的残差．工程实例验证了该方法在高原地区可以达到4等几何水准的测量精度，具有一定的应用价值．
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| 关 键 词： | EGM2008 高程转换 加权平均值 残差 |
Study of Earth Gravity Field Model in GPS Height Transformation Based on Weighted Method |
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| XI Wen-fei,SHI Zheng-tao,ZHANG Ming-yu.Study of Earth Gravity Field Model in GPS Height Transformation Based on Weighted Method[J].Journal of Gansu Sciences,2013(4):36-38. |
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| Authors: | XI Wen-fei SHI Zheng-tao ZHANG Ming-yu |
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| Institution: | 1. School of Tourism and Geographic Sciences ,Yunnan Normal University ,Kunming 650500 ,China 2. Kunming Institute of Surveying and Mapping, Kunming 650051, China) |
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| Abstract: | In engineering projects,geodetic height measured by the GPS is usually needed to be converted into normal height. The EGM2008 earth gravity model and the conversion method of GPS height are intro- duced, and based on this model and also the weight average method, the reciprocal weighting of the distance is used to calculate the residual error of GPS height conversion. And an engineering project verifies that the recommended method can achieve the measurement precision of fourth-order geometrical leveling in plateau areas, having practical applications. |
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| Keywords: | geodetic height normal height EGM2008 height transformation weighted average residualerror |
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