| EGM2008的高程拟合模型在广西区域的应用研究 |
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| 引用本文： | 李运健.EGM2008的高程拟合模型在广西区域的应用研究[J].北京测绘,2014(3):113-116,140. |
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| 作者姓名： | 李运健 |
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| 作者单位： | 广西壮族自治区地理国情监测院,广西南宁530023 |
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| 基金项目： | 广西空间信息与测绘重点实验室开放基金项目（项目编号：13-051-14-20）;广西培养新世纪学术和技术带头人专项资金资助项目（2011）. |
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| 摘 要： | 利用广西2013年测量的部分二等水准测量成果,对EGM2008地球重力场模型1′×1′的模型进行检核,得到其在广西境内的高程异常差值为36.8cm。并选取了广西两个较有代表性区域的数据,使用多种G P S高程多项式拟合的方法以及基于EGM2008地球重力场模型的移去-恢复法进行实验研究,通过数据统计分析,最优拟合模型精度可达到5cm以内,对EGM2008地球重力场模型在广西的实际应用得到了一些非常有意义的结论。
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| 关 键 词： | EGM 高程异常 多项式拟合 最优模型 移去-恢复法 |
The Application of Elevation Fitting Model Base on EGM2008 in Guangxi Region |
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| LI Yun-jian.The Application of Elevation Fitting Model Base on EGM2008 in Guangxi Region[J].Beijing Surveying and Mapping,2014(3):113-116,140. |
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| Authors: | LI Yun-jian |
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| Institution: | LI Yun-jian (Geography Gondition Monitoring Institute of Guangxi, Nanning Guangxi 530023, China) |
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| Abstract: | Based on part of the second grade leveling data in 2013, we test the applicability of the earth＇s gravity field model EGM2008 of 1′x 1 ′heightanomaly for the region of Guangxi provinceand the results show that the difference between the two type data is 36.8cm. In addition,two representative regional data are selected to fit the quasi-geoid which is formatted by multi-methods of GPS height fitting and remove and restore theory based on EGM2008. According to the statistical analysis of the data, the best fitting model precision can be up to less than 5cm. Therefore, the earth＇s gravity field model EGM2008 is applicable for engineering in Guangxi province and the experience results have significance. |
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| Keywords: | EGM2008 height anomaly polynomial fitting optimal model remove-restore technique |
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