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