The 3d images from LRO orbital photography are being used to make an exact digital topographic map of the moon, and this is fact may tweak the mean elevation value.
LRO轨道摄影机拍摄的3d图像被用作制作月球精确数字地形图，而这可能会调整平均高度值。
Interferometric Synthetic Aperture Radar is an effective technique to get Digital Elevation Model and orthophoto map.
干涉合成孔径雷达是获取场景数字高程模型和正射影像图的有效技术之一。
The water levels and water volumes of the lake in different periods were calculated by using a digital elevation model created by the topographic map.
利用数字高程模型求取易贡湖各时相的水位与水量；
The collected ground true data includes topography map with scale of 1:50 000 and the corresponding Digital Elevation Model (DEM).
收集的地理实况数据包括1：5万的地形图和根据该地形图经数字化处理生成的数字高程模型(dem)。
The collected ground true data includes topography map with scale of 1:50 000 and the corresponding Digital Elevation Model (DEM).
收集的地理实况数据包括1：5万的地形图和根据该地形图经数字化处理生成的数字高程模型(dem)。
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