Digital Elevation Model

The subject of digital elevation model encompasses a wide range of important elements. DigitalElevation/Terrain Model (DEM) - NASA Earthdata. A digital elevation model (DEM) is a three-dimensional graphic of the "bare earth" surface of land shown without trees, buildings or other objects. DEMs can be created using traditional topographic maps, modern light detection and ranging (LIDAR) data and other sources gathered by airborne and space-based instruments. NASA's DEM data, such as files collected by the Space Shuttle Radar ...

ASTER Global Digital Elevation Model V003 - NASA Earthdata. Stereo correlation was used to produce over one million individual scene based ASTER DEMs, to which cloud masking was applied. All cloud screened DEMs and non-cloud screened ... NASA Shuttle Radar Topography Mission Global 1 arc second V003.

The purpose of SRTM was to generate a near-global digital elevation model (DEM) of the Earth using radar interferometry. SRTM was a primary component of the payload on the Space Shuttle Endeavour during its STS-99 mission. NASADEM: Creating a New NASA Digital Elevation Model and Associated .... MEaSUREs 2012 project focused on providing the scientific and civil communities with a state-of-the-art global DEM from SRTM processing improvements.

Similarly, 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. New Version of the ASTER GDEM - NASA Earthdata.

From another angle, version 3 of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) is now available from NASA’s Land Processes Distributed Active Archive Center (LP DAAC). The ASTER GDEM covers land surfaces between 83°N and 83°S, and was produced through automated processing of 2.3 million scenes from the ASTER archive. NASA Begins Final ASTER Data Processing Campaign - Earthdata. During that time, the ASTER Science Team has been able to provide the user community with a consistent suite of Level 1, 2, and 3 data products, and after 25 years, some of these ASTER products remain unmatched.

“The digital elevation model is still a unique capability. Equally important, so is the nighttime thermal infrared for volcano monitoring," said Abrams. Shuttle Radar Topography Mission (SRTM) | NASA Earthdata. C-band radar data were used to create near-global topographic maps of Earth called Digital Elevation Models (DEMs).

Data from the X-band radar were used to create slightly higher resolution DEMs but without the global coverage of the C-band radar. The two radar datasets were combined to create interferogramatic maps of scanned areas. It's important to note that, terrain Elevation - NASA Earthdata. NASA's terrain elevation data measure current height and changes in land altitude and are useful for creating digital elevation models.

The ASTER Global Digital Elevation Model (ASTGTM) was developed jointly by the U.S. National Aeronautics and Space Administration (NASA) and Japan’s Ministry of Economy, Trade, and Industry (METI). ASTER is capable of collecting in-track stereo using nadir- and aft-looking near infrared cameras.