digital terrain data的意思|示意

Analyzing the storage format of DMA DTED and USGS DEM and then presenting a new digital terrain elevation data storage format. The storing and reading algorithm are also realized.

分析了DMA的DTED和USGS的DEM高程数据存储格式，比较了其异同，提出了一种高效的数字地图高程数据的存储格式并实现了存取算法。

In view of the situation that there are errors in navigation data and digital terrain data, the robustness of reference path is ensured according to choice the cell width of search space properly.

针对导航系统精度和数字地图存在误差的情况，通过适当划分搜索空间网格保证了航迹的鲁棒性。

Walkthrough in massive terrain and image data is a key technology and a difficult problem of GIS, VR and Digital Earth, etc.

海量地形影像数据的快速浏览是GIS、虚拟现实、数字地球等领域应用的关键技术与难点之一。

As the data base of the GIS digital terrain analysis, digital Elevation Model (DEM) contains rich of terrain, topography and related geo-information and knowledge.

数字地形模型(DEM)包含着丰富的地形、地貌及相关的地学信息与知识，是GIS数字地形分析的数据基础。

Digital Elevation Model(DEM) is a digital modeling process which aims at terrain and physiognomy. Irregular triangulation TIN is the best model when DEM data are stored and expressed.

数字地形模型是针对地形地貌的一种数字建模，这种建模的结果通常就是一个数字高程模型（DEM）。

Digital Terrain Model is a general designation of space topographical data set, and it is the digital description with the figure of space position and topographical attributive character.

数字地形模型是空间地形数据集合的统称，是具有空间位置特征和地形属性特征的数字描述。