Elevation
Elevation
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USGS EROS Archive - Radar - NASA SIR-C Survey Images
Spaceborne Imaging radar data (C-band and L-band) from two Space Shuttle missions (1994).
USGS EROS Archive - Digital Elevation - Why Map the World with Radar?
Have you ever seen a map that shows not only the location of features on the Earth, but also how high or low they are? This information is known as topography, and maps which display elevation information are called topographic maps.
USGS EROS Archive - Digital Elevation - Shuttle Radar Topography Mission (SRTM)
Shuttle Radar Topography Mission (SRTM) data have been enhanced to fill areas of missing data (Void Filled) to provide more complete digital elevation data with a resolution of 1 arc-second (~ 30 meters) and 3 arc-seconds (~ 90 meters) for global coverage.