Digital Elevation/Terrain Model (DEM) - NASA Earthdata
Nov 21, 2025 · 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.
NASADEM: Creating a New NASA Digital Elevation Model and …
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 …
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 …
ASTER Global Digital Elevation Model V003 | NASA Earthdata
Nov 20, 2025 · The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) Version 3 (ASTGTM) provides a global …
New in CSDA: High Resolution Digital Elevation Models
Dec 7, 2021 · 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 …
海运中的滞期费 DEM 和滞留费 DET 分别是什么意思？ - 知乎
1、DEM（DEMURRAGE CHARGES）：滞期费 2、DET（Detention Charge）：拘留费 国贸程租业务中滞期费，就必然涉及买卖舍约。 法院认为滞期费是因租船人不能在合同规定的装卸 …
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 …
Shuttle Radar Topography Mission (SRTM) | NASA Earthdata
Feb 11, 2000 · The Shuttle Radar Topography Mission (SRTM) payload flew aboard the Space Shuttle Endeavour during the STS-99 mission. SRTM collected topographic data over nearly …
NASADEM Merged DEM Global 1 arc second V001 - Earthdata
Nov 20, 2025 · NASADEM Merged DEM Global 1 arc second V001The Land Processes Distributed Active Archive Center (LP DAAC) is responsible for the archive and distribution of …
Alaska Satellite Facility's Radiometric Terrain Correction Project ...
The objective of the Alaska Satellite Facility (ASF) ALOS PALSAR RTC Project was to generate an analysis-ready synthetic aperture radar (SAR) product suitable for use in a variety of Earth …