1. ISAE‐SUPAERO University of Toulouse Toulouse France
2. Finnish Geospatial Research Institute (FGI‐NLS) Helsinki Finland
3. Electrical and Computer Engineering Department Northeastern University Boston MA USA
4. Department of Electronics and Telecommunications (DET) Politecnico di Torino Torino Italy
5. European Commission Joint Research Centre Ispra Sector Institute for the Protection and Security of the Citizen Adamstown, Ballinhassig Cork T12F24N Ireland