April 27, 2011
Rick Reeves
Software tools and data portals currently in use by Rick Reeves to create Fused Terrain Data Layer: 

ArcMap GIS software, version 9.3.1
   GUI /interactive map layer display tools
   Raster resampling tools

Geospatial Data Abstraction Library (GDAL) utilities, Linux platform (Eos)
   gdalinfo, gdal_translate, gdalbuildvrt, gdalwarp

Linux shell scripts (Python would be an alternative on a non-Unix platform)

Quantum GIS Spatial Data Analysis software - Windows platform
   GUI /interactive map layer display tools

R Software, Linux (Eos) and Windows platforms
   rgdal, sp, and raster packages

Data Search platforms:

http://srtm.csi.cgiar.org/ - CGIAR Consortium data archive - CGIAR SRTM data

https://wist.echo.nasa.gov/~wist/api/imswelcome/ - NASA WIST portal - ASTER GDEM Data

http://edcsns17.cr.usgs.gov/NewEarthExplorer/    - USGS LP DAAC portal - alternate source for SRTM data