3-Dimensional Imaging Using Millimeter-Wave Radar Technique and Dielectric Lens for Remote Security Inspection

Millimeter-wave/THz-wave imaging techniques are attractive as an indirect inspection tool for security check owing to the penetrative characteristics through standard clothes, leathers, plastics, and paper, which enable us to detect concealed hazardous objects/items without damage to human bodies. This paper demonstrates 3-dimensional imaging results utilizing the millimeter-wave radar and a dielectric lens. The depth information of a target object can be obtained by using the time-domain technique used in radar systems.