1. Institute of Applied Physics – National Research Council,IFAC-CNR,Firenze,Italy
2. Institute for Electromagnetic Sensing of the Environment – National Research Council,IREA-CNR,Bari,Italy
3. University of Milano-Bicocca,Dept. of Earth and Environmental Sciences,Italy
4. Institute of Polar Sciences,ISP – CNR,Venezia,Italy
5. EURAC Research -Institute for Applied Remote Sensing,Bolzano,Italy
6. University of Pavia,Dept. of Electrical, Computer and Biomedical Engineering,Italy
7. Environmental Protection Agency of Aosta Valley,ARPA VDA,Aosta,Italy
8. ASI - Agenzia Spaziale Italiana,P.O. COSMO-SkyMed,Rome,Italy,00198