What is SRTM digital elevation model?
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. Endeavour launched February 11, 2000 and flew for 11 days.
What resolution is SRTM data?
1 arc-second
The resolution for SRTM Void Filled data is 1 arc-second for the United States and 3 arc-seconds for global coverage.
What is NASA SRTM?
The Shuttle Radar Topography Mission (SRTM) is an international research effort that obtained digital elevation models on a near-global scale from 56°S to 60°N, to generate the most complete high-resolution digital topographic database of Earth prior to the release of the ASTER GDEM in 2009.
What kind of data are captured by NASA’s SRTM project?
The SRTM collected radar data over 80% of the Earth’s land surface between 60° north and 56° south latitude. These data were used to construct a global digital elevation model having elevation postings every 1 arc-second (approximately 30 meters)1.
What is difference between DEM and DSM?
– A DEM (Digital Elevation Model) Represents the bare-Earth surface, removing all natural and built features; – A DSM (Digital Surface Model) captures both the natural and built/artificial features of the environment, as shown below; A DTM may be interpolated to generate a DEM, but not vice versa.
Is SRTM bare earth?
We develop the first global ‘Bare-Earth’ Digital Elevation Model (DEM) based on the Shuttle Radar Topography Mission (SRTM) for all landmasses between 60N and 54S.
How do I get accurate elevation data?
5 Free Global DEM Data Sources – Digital Elevation Models
- Space Shuttle Radar Topography Mission (SRTM)
- ASTER Global Digital Elevation Model.
- JAXA’s Global ALOS 3D World.
- Light Detection and Ranging (LiDAR)
- Mars Orbiter Laser Altimeter (MOLA)
How to create a new NASA Digital Elevation Model?
Our approach will merge the reprocessed SRTM data with the DEM void-filling strategy developed during NASA’s Making Earth System Data Records for Use in Research Environments ( MEaSUREs) 2006 project, ” The Definitive Merged Global Digital Topographic Data Set ” of Co-Investigator Kobrick.
How big is the SRTM digital elevation 30m?
This SRTM V3 product (SRTM Plus) is provided by NASA JPL at a resolution of 1 arc-second (approximately 30m). This dataset has undergone a void-filling process using open-source data (ASTER GDEM2, GMTED2010, and NED), as opposed to other versions that contain voids or have been void-filled with commercial sources.
When was the shuttle radar topography mission ( SRTM ) flown?
SRTM data have been enhanced to fill areas of missing data to provide digital elevation data with a resolution of 1 arc-second for global coverage. The Shuttle Radar Topography Mission (SRTM) was flown aboard the space shuttle Endeavour February 11-22, 2000.
What is version 3.0 of SRTM global 1?
Version 3.0 SRTM Global 1 arc second product is void-filled using elevation data from Advanced Spaceborne Thermal Emission and Reflection Radiometer ( ASTER) Global Digital Elevation Model 2 ( GDEM2 ), USGS Global Multi-resolution Terrain Elevation Data ( GMTED) 2010, and USGS National Elevation Dataset ( NED ).
