Nektarios Chrysoulakis, Zina Mitraka, Foundation for Research and Technology Hellas (FORTH), Greece; Mattia Marconcini, German Aerospace Center (DLR), Germany; David Ludlow, Zaheer Khan, UWE, United Kingdom; Birgitte Holt Andersen, ApHER, Denmark; Tomas Soukup, GISAT, Czech Republic; Mario Dohr, GEOVILLE, Austria; Alessandra Gandini, TECNALIA, Spain; Jürgen Kropp, PIK, Germany; Dirk Lauwaet, VITO, Germany; Christian Feigenwinter, UNIBAS, Germany