DGMWSV — Digit. Terrain models WSV (DGMWSV05)

Digital terrain models (DGMs) describe the terrain surface (relief) by the spatial coordinates of a representative set of irregularly arranged terrain points. The DGM data are available in XYZ data format (ASCII) and are summarised in blocks in the sheet section of the German Base Map 1:5,000. They have a tile size of 2 km x 2 km. The geometric accuracy is ± 0.25 m in position (XY) and ± 0.10 m in height (Z). Depending on the point density (DGM-05), the data volume of the XYZ file (ASCII) is between 1-5 MB per block.数字地形模型（Digital Terrain Models，以下简称DGMs）通过一组具有代表性的不规则布设地形点的空间坐标，描述地形表面（地形起伏）。DGM数据采用ASCII编码的XYZ数据格式存储，并以分块形式归集于1:5000比例尺德国基础地图的图幅分区中。每个数据分块的瓦片尺寸为2千米×2千米，其几何精度为：平面位置（XY方向）允差±0.25米，高程（Z方向）允差±0.10米。根据点密度（DGM-05）的不同，单个分块的ASCII格式XYZ文件的数据量介于1至5兆字节之间。