Shuttle Radar Topography Mission

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,[2]: 4820  to generate the most complete high-resolution digital topographic database of Earth prior to the release of the ASTER GDEM in 2009.

SRTM consisted of a specially modified radar system that flew on board the Space Shuttle Endeavour during the 11-day STS-99 mission in February 2000.

[3] A derived one arcsecond dataset with trees and other non-terrain features removed covering Australia was made available in November 2011; the raw data are restricted for government use.

NASA transferred the SRTM payload to the Smithsonian National Air and Space Museum in 2003; the canister, mast, and antenna are now on display at the Steven F. Udvar-Hazy Center in Chantilly, Virginia.

It is available in at the following versions: The SRTM also carries the X-SAR instrument operated by the German Aerospace Center (DLR) and Italian Space Agency (ASI).

If the voids are large, or completely cover summit or ridge areas, no interpolation algorithms will give satisfactory results.

1-arc second global digital elevation model (30 meters) is available from the United States Geological Survey web site.

Most parts of the world have been covered by this dataset ranging from 54°S to 60°N latitude except for the Middle East and North Africa area.

SRTM Shaded Relief Anaglyph of Zagros Mountains .
The SRTM was flown on an 11-day mission of the Space Shuttle Endeavour in February 2000. [ 1 ]
This NASA image used Landsat data to texture-map the surface created using SRTM Elevation data. The Cape Peninsula and Cape of Good Hope , South Africa , are visible in the foreground. [1]
SRTM void filling with spline interpolation in GRASS GIS .
Relief map of Sierra Nevada, Spain
Example of relief map from SRTM1 (central Nevada)