Remote sensing at ITC-irst - MPA group

SRTM Shutte Radar Topography Mission

Software used: GRASS 6, GDAL and Povray

SRTM90 and VMAP0: Lago di Garda, Italia.

SRTM90 and LANDSAT-7: Val d'Aosta, Italia. View to North-West, to Monte Bianco (any camera position can be rendered).

Data access

• The official SRTM V1 data (original degree tiles)
  Oct 2005: SRTM V2 data (original degree tiles)
• SRTM V1 patched to larger WRS2 tiles (Landsat scheme) and reprocessed to GeoTIFF

srtm_generate_hdr.sh: general shell script to make GeoTIFF from original SRTM90 files (reads the hgt.zip file and generated a BIL file with header). Requires GDAL tools to be installed.

r.in.srtm: GRASS script to import original SRTM files. To be used in Lat/Long LOCATIONS (WGS84, to be precise EGM96) - integrated into GRASS 6.0 (or later)!

Holes in the SRTM data can be closed within GRASS with r.fillnulls (uses splines, see reference below).

Further Reading

• M. Neteler, 2005. SRTM and VMAP0 data in OGR and GRASS. GRASS Newsletter, Vol.3, pp 2-6, June 2005.
  [ bib | PDF ]
• The Shuttle Radar Topography Mission homepage at NASA's JPL
• SRTM Forum [old site: SRTM Forum]
• Official SRTM accuracy report
• Evaluation of SRTM 90m DEM data