Abstract: Long security lines are frustrating for airline passengers who must undergo pat downs when currently deployed mm-wave imaging system falsely alarm innocent objects. Faster and more efficient security checkpoints are required to effectively prevent airplane terrorist attacks while minimizing the inconvenience of long security lines. The goal of this work is to build an algorithmic approach to determine the dielectric constant of concealed objects, and rule out non-explosive dielectric objects, to speed Advanced Imaging Technology (AIT) scanning. Our Virtual Source (VS) model is an...