Multi-Post Imaging Simulation for Passive Millimeter Wave Security Inspection

To address the imminent threat of terrorist attacks in public places and the limitations of traditional human security measures, passive millimeter wave (PMMW) imaging has been presented as one of the primary means for personnel security inspection. In this paper, we simulate multi-angle and dual-polarization PMMW brightness temperature (TB) images for three typical non-cooperative human postures (sitting, walking, and standing). The simulation results indicate that TB characteristics of multi-angle and dual-polarization observations are different, and the reasonable selection of azimuth angle and polarization mode is crucial to improve the contrast between the human body and concealed objects. These findings are of significant referential value for the design of new human security systems and object detection methods.