In this paper, three areas that three-dimensional digital terrain map of related concepts, methods of data collection and three-dimensional digital terrain mapping were studied. 本文从三维数字地形图(DTM)的相关概念、数据采集的方法和三维数字地形图(DTM)的绘制三个方面进行了研究。
The data acquisition methods of three-dimensional digital terrain map : data collection of digital photogrammetric, data collection of total station and three-dimensional airborne laser scanning system. 主要研究了三维数字地形图(DTM)的数据采集方法:数字摄影测量数据采集,全站仪数据采集和机载激光三维扫描系统。
In accordance with peculiarity of existing prediction model, the renewal on digital terrain map with large scale is actualized in the current digital mapping system with simplified data processing. 文中针对现有开采沉陷预计模型的特点,以通用数字化成图系统为操作平台,经过简单的数据处理后,实现了矿区大比例尺数字地形图(DTM)的预测更新。
Selection and Rendering of Roam Path on 3D Digital Terrain Map(DTM) 三维数字地形图(DTM)上漫游路径的选取与显示
Implementing of updating digital terrain map in mining subsidence area 采煤沉陷区数字地形图(DTM)更新的一种实现方法