BOLLI, PietroPietroBOLLIWijnholds, Stefan J.Stefan J.Wijnholdsde Lera Acedo, EloyEloyde Lera AcedoLingua, AndreaAndreaLinguaMONARI, JADERJADERMONARIPaonessa, FabioFabioPaonessaPUPILLO, GiuseppeGiuseppePUPILLOVirone, GiuseppeGiuseppeVirone2020-12-232020-12-232017978-90-825987-0-4978-1-5090-4469-6http://hdl.handle.net/20.500.12386/29157Low Frequency Aperture Array (LFAA) systems are opening up new frontiers for ground-based radio astronomical instruments. These instruments require advanced measurement procedures and systems for characterization and calibration of their front-end. For this purpose, a test source mounted on an Unmanned Aerial Vehicle (UAV) has been developed in Italy. This system has proven to be a reliable, accurate, portable and effective tool to characterize LFAA systems as demonstrated during measurement campaigns on two Aperture Array Verification Systems for the LFAA of the SKA in the UK and on a LOFAR station in The Netherlands. This contribution gives an overview of these campaigns, the continuous development of the UAV-based measurement system and the envisaged future improvements.ELETTRONICOenConference paper10.23919/URSIGASS.2017.81050202-s2.0-85045570590https://ieeexplore.ieee.org/document/8105020FIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_17 Instrumentation – telescopes, detectors and techniques