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COSMO SkyMed (CSK) is the first Italian SAR constellation. Four satellites operate in the X-band on the same dawn–dusk orbit and the ascending node is at 6:00, whereas other satellites often use 18:00. The platform is inherited from the Radarsat-2 prima platform, with right- and left-looking abilities. The launches of the four satellites occurred in June and December 2007, October 2008 and November 2010.

CSK is a dual civil and military mission, and the submetric spotlight is for defense use only. Other modes are accessible for commercial use, i.e. two different ScanSAR modes (100 and 200 km), one stripmap (40 km) and one civil spotlight mode (10 km). The satellites operate in a single-polarization scheme with HH, HV, VV or VH selectable.

COSMO SkyMed New Generation (CSG) is composed of two satellites: the first one was launched in December 2019. Orbiting at the same altitude as the first generation, this new system has significant improvements in terms of agility, resolution and polarizations. It is possible to obtain simultaneous swaths in stripmap mode and also different spotlight images on the same orbital span. The system also adds quad-polarization possibilities in stripmap. For civilians, three spotlight modes are possible, in single or dual polarization. Stripmap always has the same 40 km swath in single polarization as well as in dual polarization. As for the first generation, a narrow ScanSAR of 100 km and wide ScanSAR of 200 km are possible, again in single or dual polarization.

Data access: Archived products can be seen and commercially ordered through the eGEOS portal at http://catalog.e-geos.it/.