What is a satellite image?
A picture of the earth taken from an earth orbital satellite. Satellite images may be produced photographically or by on-board scanner
Source: GIS Glossary. GIS Development: the geospatial resource portal. http://www.geospatialworld.net/index.php?option=com_glossary&view=managetemplate&Itemid=633. 8 Mar 2012.
Geocover 2000 is a worldwide set of satellite imagery from Landsat 7 Enhanced Thematic Mapper (ETM+). The 15m band was pan-sharpened with 30m multi-spectral bands 7-4-2. The Landsat images have been ortho-rectified and projected in UTM WGS84.