Shuttle
Radar Topography Mission DEM
From 11 to 22 February 2000 the Space Shuttle Endavour circled the Earth carrying a C-band radar system designed to measure the Earth's surface topography. Most of the Earth's surface was sampled more than once and, with the exception of the polar regions, a globally consistent DEM could be constructed. The DEM is published at 3-arc-seconds (about 90 meters at the Equator), but the USA is available at 1-arc-second.
| General |
Simple file-based format for a DEM, from the SRTM. Elevation is in meters above sea level, relative to the WGS84 ellipsoid. |
| Read |
The driver reads the data (dspInt16) and extracts the coordinate system from the file name. Both the 3-arc-second files and the 1-arc-second files are supported. 30-Arc-second files are not supported. |
| Write |
This is a read-only format. |
| Attributes | This format does not include any attributes. |
| Coordinate system |
The data is in geographic coordinates. The file name contains the latitude and longitude of the center of the lower-left pixel. Coordinates are based on the WGS84 ellipsoid. |
| Documentation | The SRTM home page can be found here. |
| Data sources | Several EOS Data Gateways distribute SRTM data. A list of sites can be found here. |
| Developer information |
None. |