摘要
介绍了建立在ARC/INFO软件的基础上,以南京卫岗地区为例,利用11∶0 000的国家基本地形图作为基础底图资料,严格按照国家DEM的制作精度要求,制作1∶10 000的数字高程模型(DEM)的方法及过程,并相应做了三维可视化方面的研究。而且对制作过程中的地形图自动矢量化作了进一步探索。同时详细、严格地对生成的DEM做了精度和质量上的检验。在此基础上做了坡度和坡向提取、山脊线和山谷线提取、水文分析等一系列地学应用研究。
It has momentous significance of investigating DEM, for which has a great value of application in the modern geographical research. With a case study of Weigang District in Nanjing City, this paper mainly introduced the techniques and process of executing the DEM rigorously according to the national precise standard of producing DEM, by digitizing contour from the basic rigorous map on the scale of 1 ： 10 000 based on the ARC/INFO software. And an investigation into 3D Visualization of DEM and automatical vectorization of relief map in the processing faeture was carried on. At the same time, a proof-test of the precision and quality of the DEM was made detailedly and strictly, on the basis of which a series of correlative analysis were made, such as the picking-up of slope and aspect, the picking-up of chine and hollow, hydrology-analysis and so on.
出处
《安徽农业科学》
CAS
北大核心
2009年第2期894-898,共5页
Journal of Anhui Agricultural Sciences
基金
南京农业大学SRT项目资助
关键词
11∶0000DEM
三维可视化
自动矢量化
精度和质量检验
DEM应用
DEM on 1：10 000 scale
3D Visualization
Automatical vectorization
Evaluation of precision and quality
Application of DEM
