Wikipedia
TerraSAR-X
TerraSAR-X, a radar Earth observation satellite, is a joint venture being carried out under a public-private-partnership between the German Aerospace Center (DLR) and EADS Astrium. The exclusive commercial exploitation rights are held by the geo-information service provider Astrium. TerraSAR-X was launched on June 15, 2007 and has been in operational service since January 2008. With its twin satellite TanDEM-X, launched June 21, 2010, TerraSAR-X acquires the data basis for the WorldDEM, the worldwide and homogeneous DEM available from 2014.