
Digital Elevation/Terrain Model (DEM) | NASA Earthdata
Sep 30, 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.
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 …
NASADEM: Creating a New NASA Digital Elevation Model and …
MEaSUREs 2012 project focused on providing the scientific and civil communities with a state-of-the-art global DEM from SRTM processing improvements.
海运中的滞期费 DEM 和滞留费 DET 分别是什么意思? - 知乎
DEM DEMURRAGE CHARGES: 滞期费 指承运人或其代理人控制的集装箱 超期(逾期) 使用费, 通常是指收货人在目的地码头或堆场清关提货前发生的集装箱超期使用费。 时间范围包括箱 …
ASTER Global Digital Elevation Model V003 - NASA Earthdata
Description The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) Version 3 (ASTGTM) provides a global …
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 …
我想下载且只想下载某个省份的DEM数据,该如何下载? - 知乎
关注者 11 被浏览 28,733 凉生 GISer 以地理空间数据数据云(地理空间数据云 (gscloud.cn))下载DEM为例,进入网站后,选择高级检索 显示新面板后,选择数据集 因为这里是下载DEM数 …
NASADEM Merged DEM Global 1 arc second V001 - Earthdata
Feb 13, 2020 · Description The Land Processes Distributed Active Archive Center (LP DAAC) is responsible for the archive and distribution of the NASA Making Earth System Data Records …
请问DEM和海拔有什么区别? - 知乎
他们根本不是一个东西。 DEM(digital elevation model) 数字高程模型。它就是一个网格化的一个文件形式而已,文件中每一个单位像素点都被赋予了一个特定的高程值。DEM一般用的 …
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 …