Santi, F.F.SantiPisciottano, I.I.PisciottanoCristallini, D.D.CristalliniPastina, D.D.Pastina2022-03-142022-03-142021https://publica.fraunhofer.de/handle/publica/411700This paper investigates the possibility to combine passive ISAR imaging of a maneuvering ship over different frames using digital video broadcasting-satellite (DVB-S) as illuminators of opportunity. First, the image point spread function (PSF) in the target fixed reference system is analytically derived, allowing to characterize the resolution properties in a domain independent on the particular frame. Then, a few preliminary experimental results are provided considering a turning ferry, showing that the combination of multiple frame images can increase the amount of information enhancing the ship classification capability.en621conference paper