What is the purpose of GeoTIFF format for satellite data?
The TIFF imagery file format can be used to store and transfer digital satellite imagery, scanned aerial photos, elevation models, scanned maps or the results of many types of geographic analysis. Over the past several years many users of such images have urged geographic data suppliers to provide imagery in TIFF format. TIFF is the only full-featured format in the public domain, capable of supporting compression, tiling, and extension to include geographic metadata. GeoTIFF implements the geographic metadata formally, using compliant TIFF tags and structures.