摘要
坡度是最基本的地形因子之一.介绍了基于DEM的坡度计算方法,对坡度分级统计中的误差来源分类进行分析,并结合GIS软件产品用实验法分析其DEM精度,以及各误差因素对坡度统计计算的影响,以便在实践中根据不同资料适当地选择算法和软件产品,进而提高工程项目的质量.
Slope is one of most frequently used terrain parameters in Geo-Science model.This paper introduces some calculating methods about slope based on Digital Elevation Model(DEM), and discusses the error's source in shope statistic.This paper also analyzes the accuracy of slope in different error's source and studies the accuracy of the different GIS softwares by experiment, and makes clear the effect of different error's source.Accordingly GIS softtares are selected and used in reason with different datum and technology in practice, and projects quality will be improved.
出处
《南昌工程学院学报》
CAS
2005年第2期41-45,共5页
Journal of Nanchang Institute of Technology
基金
广西自然科学基金资助项目(0339039).
关键词
DEM
坡度
误差
精度
算法
DEM
slope
error
accuracy
algorithms
