Cao, T.-T.V.T.-T.V.CaoVu, T.T.VuByrne, M.M.ByrneDahal, N.N.DahalBerry, P.E.P.E.BerryIji, A.B.A.B.IjiGustainis, D.D.GustainisUmmenhofer, M.M.UmmenhoferKohler, M.M.Kohler2022-03-142022-03-142020https://publica.fraunhofer.de/handle/publica/40940510.1109/RADAR42522.2020.9114715Using experimental data captured with a passive radar linear array built by Defence Science and Technology (DST) Group, the performance of various beamforming algorithms (beamformers) for direction-of-arrival (DoA) estimation is comparatively assessed. Beamformers' DoA estimates are passed to a tracker which performs angle tracking, and the resulting track quality is examined based on the Optimal Sub-Pattern Assignment Metric for Multiple Tracks (OSPAMT). By matching the ground-truth tracks with the confirmed tracks, the OSPAMT takes into account both the locality error (how close the confirmed tracks are to the ground-truth tracks) and the cardinality error (the numbers of false tracks, track breaks and missed tracks). The best OSPAMT score is achieved by a newly-designed sparse solution beamformer derived from a compressive sensing principle and based on off-grid approaches.en621conference paper