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| 基于Matlab的数据处理方法在GPS高程拟合中的应用 | |
| 引用本文： | 陈本富,王贵武,沈慧,郭先春.基于Matlab的数据处理方法在GPS高程拟合中的应用[J].昆明理工大学学报(理工版),2009,34(5):1-4. |
| 作者姓名： | 陈本富 王贵武 沈慧 郭先春 |
| 作者单位： | 1. 河海大学,土木工程学院,江苏,南京,210098;东华理工大学,地测学院,江西,抚州,344000 2. 昆明市规划局,云南,昆明650032 3. 云南省电子工业研究所,云南,昆明,650031 4. 东华理工大学,地测学院,江西,抚州,344000 |
| 基金项目： | 江西省数字国土重点实验室开放基金资助 |
| 摘 要： | 在分析GPS高程异常拟合模型实质的基础上，结合工程实例，顾及地球重力场的空间连续性特点，运用Matlab中的拟合插值函数Griddata等进行高程异常数据处理，并与常规采用的平面及二次曲面拟合成果进行比较．计算表明，将Matlab的数值计算及图形处理能力运用于区域GPS高程异常拟合，相对传统拟合方法，数据处理方式简洁，计算工作量少，成果精度可靠，并能立体表现高程异常的空间分布特征． |
| 关 键 词： | Matlab Griddata函数 GPS高程 拟合 插值 高程异常 |
Application of Data Process Based on Matlab to GPS Elevation Fitting |
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| Affiliation: | EllEN Ben-fu ,WANG Gui-wu ,SHEN Hui, GUO Xian-chun ( 1. College of Civil Engineering, Hehai University, Nanjing 210098,China; 2. Department of Geoscience and Resource Information, East China Institute of Technology, Fuzhou 544000, China; 3. Kunming Urban Planning Bureau Kunming 650032, China; 4. Yunnan Research Institute of Electronics Industry, Kunming 650051,China) |
| Abstract: | Based on the analysis of the GPS elevation abnormal fitting models, also considering the spatial continuity of gravity field, combined with a practical project＇s calculations methods, the fitting - interpolate method based on Griddata function of Matlab, in comparison with the traditional methods, is shown to fit the quasi - geoids better because of the superiority of the data and graphic process of the software. The simplicity of calculation procedure and the accuracy can be ensured with less required work. What＇s more, the space distribution of the height abnormal is shown in three- dimension. |
| Keywords: | Matlab |
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