| 基于复化公式的DEM表面积算法分析 |
| |
| 引用本文： | 江帆,吕晓华,王仲兰.基于复化公式的DEM表面积算法分析[J].测绘学院学报,2005,22(4):263-265. |
| |
| 作者姓名： | 江帆 吕晓华 王仲兰 |
| |
| 作者单位： | [1]信息工程大学,测绘学院,河南郑州450052 [2]河南省建筑工程学校,河南郑州450007 |
| |
| 基金项目： | 国家自然科学基金资助（40401052） |
| |
| 摘 要： | 地形因子（诸如表面积）的计算是地形分析的一个重要部分.文中将正方形格网划分为三角形格网;并对正方形格网分别运用复化梯形公式、复化Simpson公式和复化Cotes公式,对DEM表面积进行实验;计算空间曲面表面积,分析其精度.结果表明,复化Simpson公式具有较好的效果.
|
| 关 键 词： | 数字高程模型 表面积 复化积分算法 精度 |
| 文章编号： | 1009-427X（2005）04-0263-03 |
| 收稿时间： | 2005-04-11 |
| 修稿时间： | 2005-06-18 |
The Analysis of DEM Surface Area Based on Composed Calculus Algorithms |
| |
| JIANG Fan, LV Xiao-hua, WANG Zhong-lan.The Analysis of DEM Surface Area Based on Composed Calculus Algorithms[J].Journal of Institute of Surveying and Mapping,2005,22(4):263-265. |
| |
| Authors: | JIANG Fan LV Xiao-hua WANG Zhong-lan |
| |
| Institution: | 1.Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052 ,China; 2. Henan Institute of Architecture Engineering, Zhengzhou 450007, China |
| |
| Abstract: | Digital Elevation Model(DEM) is a kind of discrete numerical expression to the earth surface,while the analysis of terrain is now recognized as a key measure in cognizing the environment of terrain.Therefore,it is an important part to calculate the basic terrain factor(such as surface area).Based on four calculus algorithms,this paper carries out an experiment on the area of DEM surface,then analyzes and compares the results of calculation.Results indicate Simpson formula in grid is more effect. |
| |
| Keywords: | Digital Elevation Model surface area composed calculus algorithm accuracy |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
