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。
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 elevation and terrain maps based on the new data reveal the heavily cratered and bumpy surface of the moon in all its complexity.
通过照片我们可以清晰的看到月球背部地形复杂、表面崎岖。
Digital elevation and terrain maps based on the new data reveal the heavily cratered and bumpy surface of the moon in all its complexity.
通过照片我们可以清晰的看到月球背部地形复杂、表面崎岖。
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