Benthem, P.P.BenthemWayth, R.R.Waythde Lera Acedo, E.E.de Lera AcedoZarb Adami, K.K.Zarb AdamiALDERIGHI, MONICAMONICAALDERIGHIBELLI, CarolinaCarolinaBELLIBOLLI, PietroPietroBOLLIBooler, T.T.BoolerBorg, J.J.BorgBroderick, J. W.J. W.BroderickCHIARUCCI, SimoneSimoneCHIARUCCIChiello, R.R.ChielloCiani, L.L.CianiCOMORETTO, GiovanniGiovanniCOMORETTOCrosse, B.B.CrosseDavidson, D.D.DavidsonDeMarco, A.A.DeMarcoEmrich, D.D.Emrichvan Es, A.A.van EsFIERRO, DAVIDEDAVIDEFIERROFaulkner, A.A.FaulknerGerbers, M.M.GerbersRazavi-Ghods, N.N.Razavi-GhodsHall, P.P.HallHorsley, L.L.HorsleyJuswardy, B.B.JuswardyKenney, D.D.KenneySteele, K.K.SteeleMagro, A.A.MagroMATTANA, AndreaAndreaMATTANAMcKinley, B.B.McKinleyMONARI, JADERJADERMONARINALDI, GiovanniGiovanniNALDINanni, J.J.NanniDI NINNI, PAOLAPAOLADI NINNIPaonessa, F.F.PaonessaPERINI, FEDERICOFEDERICOPERINIPOLONI, MARCOMARCOPOLONIPUPILLO, GiuseppeGiuseppePUPILLORUSTICELLI, SIMONESIMONERUSTICELLISCHIAFFINO, MARCOMARCOSCHIAFFINOSCHILLIRO', FRANCESCOFRANCESCOSCHILLIRO'Schnetler, H.H.SchnetlerSinguaroli, R.R.SinguaroliSokolowski, M.M.SokolowskiSutinjo, A.A.SutinjoTartarini, G.G.TartariniUng, D.D.UngBij de Vaate, J. G.J. G.Bij de VaateVirone, G.G.VironeWalker, M.M.WalkerWaterson, M.M.WatersonWijnholds, S. J.S. J.WijnholdsWilliams, A.A.Williams2022-03-282022-03-2820210004-6361http://hdl.handle.net/20.500.12386/31976The design and development process for the Square Kilometre Array (SKA) radio telescope's Low Frequency Aperture Array component was progressed during the SKA pre-construction phase by an international consortium, with the goal of meeting requirements for a critical design review. As part of the development process a full-sized prototype SKA Low `station' was deployed - the Aperture Array Verification System 1 (AAVS1). We provide a system overview and describe the commissioning results of AAVS1, which is a low frequency radio telescope with 256 dual-polarisation log-periodic dipole antennas working as a phased array. A detailed system description is provided, including an in-depth overview of relevant sub-systems, ranging from hardware, firmware, software, calibration, and control sub-systems. Early commissioning results cover initial bootstrapping, array calibration, stability testing, beam-forming, and on-sky sensitivity validation. Lessons learned are presented, along with future developments.STAMPAenArticle10.1051/0004-6361/2020400862-s2.0-85118535018https://www.aanda.org/articles/aa/full_html/2021/11/aa40086-20/aa40086-20.html2021A&A...655A...5BFIS/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