Ilaria Petracca, Tor Vergata University of Rome, GEO-K s.r.l., Italy; Daniele Latini, GEO-K s.r.l., Italy; Stefania Bonafoni, University of Perugia, Italy; Fabio Del Frate, Tor Vergata University of Rome, Italy; Marco Di Giacomo, Tor Vergata University of Rome, GEO-K s.r.l., Italy; Fabrizio Niro, Stefano Casadio, SERCO for ESA/ESRIN, Italy; Giovanni Schiavon, Tor Vergata University of Rome, Italy