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,Dept. of Earth and Environmental Sciences,Bicocca,Italy
4. Institute of Polar Sciences, ISP - CNR,Venezia,Italy
5. EURAC Research-Institute for Applied Remote Sensing,Bolzano,Italy
6. Universita degli Studi di Pavia,Dipartimento di Ingegneria Industriale e dell'Informazione,Pavia,Italy
7. Environmental Protection Agency of Aosta Valley,Aosta,Italy