1. CommSensLab-UPC, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya (UPC), C/ Jordi Girona, 1-3, 08034 Barcelona, Spain
2. Institut d’Estudis Espacials de Catalunya (Institute of Space Studies of Catalonia, IEEC), 08034 Barcelona, Spain
3. DTU Wind and Energy Systems, Technical University of Denmark, Frederiksborgvej 399, 4000 Roskilde, Denmark