| 区域高程异常内插方法研究 |
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| 引用本文： | 沈京湘,王鹤,郎刚,陈平川.区域高程异常内插方法研究[J].北京测绘,2008(2):23-26. |
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| 作者姓名： | 沈京湘 王鹤 郎刚 陈平川 |
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| 作者单位： | 中航勘察设计研究院,北京,100098 |
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| 摘 要： | 介绍了部分高程异常内插的方法,结合一个具体的实例,在2km×2km的小范围内采用多项式拟合内插的方法进行高程异常的逼近,运用GPS水准获得的数据进行检查,通过分析,应该采用5参数内插的方法,取得了2.8cm的精度;并据此进行高程异常内插分析,运用MATLAB编写程序对几种插值方法进行讨论。
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| 关 键 词： | 高程异常 曲面拟合 规则格网 插值 似大地水准面 |
| 修稿时间： | 2008年2月4日 |
Research of Interpolation Methods for Area Elevation Anomaly |
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| SHEN Jing-xiang,WANG He,LANG Gang,CHEN Ping-chuan.Research of Interpolation Methods for Area Elevation Anomaly[J].Beijing Surveying and Mapping,2008(2):23-26. |
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| Authors: | SHEN Jing-xiang WANG He LANG Gang CHEN Ping-chuan |
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| Institution: | SHEN Jing-xiang,WANG He, LANG Gang, CHEN Ping-chuan ( AVIC Institute of Geotechnical Engineerig, Beijing, 100098 ) |
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| Abstract: | This paper introduces some fitting methods of elevation anomaly.Through a specific example,the method of polynomials fitting method is used to approach the surface of elevation anomaly in a small area,2km 2km;through further analyzing,the fitting method of five parameters polynomials is adopted and it proves that it can reach the precision of 3.8cm by testing the fitting with some data acquired by GPS leveling.Based on these,analysis of elevation anomaly regular grid network interpolation is summarized and several interpolation methods are carried out by writing MATLB program. |
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| Keywords: | Elevation Anomaly Surface Fitting Regular Grid Network Walues of Interpolation Quasi-geoid |
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