Friederich, F.F.FriederichBaccouche, B.B.BaccoucheKeil, A.A.KeilKahl, M.M.KahlBolivar, P.H.P.H.BolivarLöffler, T.T.LöfflerJonuscheit, J.J.Jonuscheit2022-03-122022-03-122014https://publica.fraunhofer.de/handle/publica/38687410.1109/IRMMW-THz.2014.6956278We report on the development of a stepped frequency continuous wave THz imaging system for process control in industrial environments. The system is based on a sparse line array consisting of 12 emitters and 12 heterodyne receivers operating in a frequency range between 75 GHz and 110 GHz. The applied multiple-input and multiple-output technique allows the reconstruction of THz images with 144 virtual pixels per line, while a band-conveyer below the line array provides the required feed motion of the sample for 3-D data acquisition.endata acquisitionimage reconstructioninspectionprocess controlproduction engineering computingconference paper