Millimeter-wave band radiometric imaging experiments for the detection of concealed objects

In this work, we present radiometric images for several concealed object experiments that were measured at TUBITAK - Marmara Research Center (MRC) facilities. The radiometric imaging system that collects the cosmic background radiation from the target is utilized on a 2D data collection grid to have the millimeter-wave image of the target. A detection algorithm is developed to point out the region of the hidden object beneath the cloth. The raw and processed passive millimeter wave images of various targets with concealed objects are shown after applying our detection algorithm. The resultant images have demonstrated that the passive imaging system together with our detection routine produces successful images of the targets.