What is the resolution of SRTM?
Product Specifications
| Vertical Datum | EGM96 (Earth Gravitational Model 1996) |
| Vertical Units | Meters |
| Spatial Resolution | 1 arc-second for global coverage (~30 meters) 3 arc-seconds for global coverage (~90 meters) |
| Raster Size | 1 degree tiles |
| C-band Wavelength | 5.6 cm |
What is SRTM 30m?
The Shuttle Radar Topography Mission (SRTM, see Farr et al. 2007) digital elevation data is an international research effort that obtained digital elevation models on a near-global scale. This SRTM V3 product (SRTM Plus) is provided by NASA JPL at a resolution of 1 arc-second (approximately 30m).
What is SRTM model?
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 is SRTM is it a satellite?
Remote Sensing from Satellites☆ The Shuttle Radar Topography Mission (SRTM) is an international project headed by the National Imagery and Mapping Agency (NIMA), an agency in the United States DoD, and NASA. On February 11, 2000, the SRTM payload onboard the Space Shuttle Endeavour was launched.
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. Therefore, our DEM will be valuable for any global applications, such as large scale flood modelling requiring a ‘Bare-Earth’ DEM.
How accurate are elevations in Google Earth?
A vertical accuracy study found the root mean square error (RMSE) of GDEM data is 8.68 meters when compared against 18,000 geodetic control points in the USA [14]. LIDAR-derived elevation data are available for some coastal states and inland states at a resolution of 1/9 arc-second (about 3 meters).
What is difference between DEM and DTM?
A DEM is a bared-earth raster which non-ground (man-made) features such as roads and building aren’t included in it. DEM is useful for hydrological modeling, surface analyzing, and soil mapping. Whereas DTM is a 3D model of visualizing surface elevation data; its structure is based on the TIN which is vector data.
How do I get SRTM data?
Where can you download the SRTM data? SRTM DEM data is being housed on the USGS Earth Explorer. To download, select your area of interest. Under the data sets tab, select Digital Elevation > SRTM > SRTM 1-ArcSecond Global .
Is SRTM a Dem?
“The SRTM mission: a world-wide 30 m resolution DEM from SAR interferometry in 11 days”.