摘要
简要介绍了DTM的提出和应用情况,并对数字地面模型(DTM)、数字高程模型(DEM或DHM)、数字地形模型(DGM)等三个概念进行了论述,说明了它们的区别和联系,详细论述了离散点、不规则三角形、等高线、断面线和规则格网等几种数字高程模型的数据结构,并对不同数据结构的数字地面模型的特征进行了比较。
The article introduced the presentation and the application of DTM.It also presented the concept of DTM,DEM and DGM and the differences and relationship of them.The article discussed the data structure of the discrete points,the irregular triangles,the contour lines,profile lines and the regular grids,and compared the characters of the different data structures.
出处
《海洋测绘》
2004年第3期1-4,共4页
Hydrographic Surveying and Charting
