基于DEM坡度坡向算法精度的分析研究

被引：164

作者：

刘学军

龚健雅

周启鸣

汤国安

机构：

[1] 南京师范大学地理科学学院

[2] 武汉大学测绘遥感信息工程国家重点实验室

[3] 香港浸会大学地理系

来源：

关键词：

数字地面模型; 坡度; 坡向; 算法; 精度;

D O I：

暂无

中图分类号：

P217 [地形测绘和地形图测绘];

学科分类号：

摘要：

坡度坡向是两个最基本的地形因子,目前对DEM坡度坡向计算模型和精度存在一些不同的甚至矛盾的观点,其原因在于没有区分误差来源和分析评价方法的不同。本文对DEM坡度坡向误差进行了理论分析,并通过实验数据对相关结论进行了验证。旨在澄清目前关于坡度坡向计算模型上的矛盾结论。

引用

页码：258 / 263

页数：6

共 9 条

[1] An Evaluation of DEM Accuracy: Elevation, Slope and Aspect. BOLSTAD P V,STOWE T J. Photogrammetric Engineering and Remote Sensing . 1994
[2] On the Accuracy of the Algorithms for Interpreting Grid based Digital Terrain Model. LIU Xue-jun. . 2002
[3] What Cell Size Does the Computed Slope/Aspect Angle Represent?. HODGSON M E. Photogrammetric Engineering and Remote Sensing . 1995
[4] A Research on the Accuracy of Digital Elevation Models. Tang G. . 2000
[5] A Comparison of Algorithms Used to Compute Hill Slope as a Property of the DEM. JONES K H. Computers and Geosciences . 1998
[6] The effect of data precision on the calculation of slope and aspect using gridded DEMs. Carter J. Cartographica . 1992
[7] The effect of DEM resolution on slope and aspect mapping. CHANG K,TSAI B. Cartography and Geographic Information Systems . 1991
[8] Accuracy of Local Topographic Vari-ables Derived from Digital Elevation Models. Florinsky I V. Int.J.Geographical Information Science . 1998
[9] A Comparison of Techniques for the Calculation of Gradient and Aspect from A Grided Digital Elevation Model. SKIDMORE A K. International Journal of Geographical Information Systems . 1989