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- Digital Elevation Terrain Model (DEM) | NASA Earthdata
NASA's data for digital elevation models (DEM) comes from airborne and space-based sources and are useful for analyzing a majority of Earth's terrain
- 到底什么是DEM？如何获取该数据？ - 知乎
DEM，Digital Elevation Model，DEM，数字高程模型，是描述地表起伏形态特征的空间数据模型，目前可以免费下载到的全球DEM数据主要有SRTM、HGTNASA、AW3D30、TanDEM-X DEM等。 SRTM
- NASADEM: Creating a New NASA Digital Elevation Model and Associated . . .
We propose a significant modernization of the publicly- and freely-available DEM data Accurate surface elevation information is a critical component in scientific research and commercial and military applications
- ASTER Global Digital Elevation Model V003 | NASA Earthdata
The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) Version 3 (ASTGTM) provides a global digital elevation model (DEM) of land areas on Earth at a spatial resolution of 1 arc second (approximately 30 meter horizontal posting at the equator)
- New in CSDA: High Resolution Digital Elevation Models
High-resolution Digital Elevation Models (DEM) for non-polar regions at two-meter spatial resolution are now available through NASA’s Commercial SmallSat Data Acquisition (CSDA) program
- 请问如何在网站上下载免费的DEM数据？ - 知乎
到这里数据下载就完成啦！ 2 数据预处理（镶嵌和裁剪） 将下载下来的压缩包全部解压缩，在ArcGIS中加载出来，顺便将桂林市边界加进来，可以看见，DEM数据完全覆盖了桂林市，但是分幅之间有明显的的界线，一看就是个九宫格，这是我们需要对数据进行镶嵌。
- 我想下载且只想下载某个省份的DEM数据，该如何下载? - 知乎
插值算法来自于Reuter et al （2007） 这里我以SRTMDEM 90M 分辨率原始高程数据下载为例，选择以行政区来进行数据下载 然后点击检索，可以看到江西省需要五副DEM影像才能完整覆盖，那么把列表显示的五个数据下载下来就好了。
- Shuttle Radar Topography Mission (SRTM) | NASA Earthdata
The Shuttle Radar Topography Mission (SRTM) payload flew aboard the Space Shuttle Endeavour during the STS-99 mission SRTM collected topographic data over nearly 80% of Earth's land surfaces, creating the first-ever near-global dataset of land elevations The SRTM payload consisted of two radar antennas, one located in the shuttle's payload bay and the other installed on the end of a 200-foot
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