Description

From http://www2.jpl.nasa.gov/srtm/:

... The Shuttle Radar Topography Mission (SRTM) obtained elevation data on a near-global scale to generate the most complete high-resolution digital topographic database of Earth.

... SRTM is an international project spearheaded by the National Geospatial-Intelligence Agency (NGA) and the National Aeronautics and Space Administration (NASA).

Detailed info on data products at http://www2.jpl.nasa.gov/srtm/datafinaldescriptions.html. It lists:

• Level-2 Terrain Height Data Sets (Digital Topographic Maps)
• Random Height Error Data Sets
• Strip Orthorectified Image Data Sets
• Systematic Height Error Model
• Final Verification Report & Global Height Error Model

Openness: OPEN

• Provided by US Government Federal Agency so is public domain.
• Access: see tags.