DTM怎么读

The principles and approaches for building Digital Terrain Model ( DTM) of GIS are presented. The test generates Digital Elevation Model ( DEM) with the distance weighted average interpolation of shifting imitation for dispersed elevation points.

介绍了GIS数字地形模型（DTM）的构造原理和方法，用离散点移动拟合距离加权平均插值方法生成了GIS数字高程模型（DEM）。

To generate regular grid digital terrain model ( DTM) from scattered points, the key problem is to improve the efficiency of searching neighbor points.

从离散点内插规则格网数字地形模型（DTM）方法的关键是如何提高待插点周围数据的搜索效率。

By introducing the Digital Terrain Model ( DTM) to computer aided subgrade design ( subgrade CAD) system, the problem about how to design the drainage facilities by computer automatically can ho solved effectively.

将数字地形模型引入路基设计CAD中，可有效地解决路基排水设施的设置等关键问题；