1. Laboratoire d'Aérologie, Université de Toulouse, CNRS, UPS; Toulouse France
2. LERMA; Observatoire de Paris, CNRS; Paris France
3. Department of Electronic and Electrical Engineering; University of Bath; Bath UK
4. Electrical Engineering Department; Technological University of Catalonia; Terrassa Spain
5. LACy, UMR 8105, Météo-France/CNRS/Université de La Réunion; Saint-Denis France
6. Department of Electronics; AGH University of Science and Technology; Krakow Poland
7. NMT; Socorro New Mexico USA
8. Météorage; Pau France