Human body imaging by microwave UWB radar

This paper investigates the feasibility of human body imaging by means of microwave ultra-wideband (UWB) radar with a planar aperture. Its potential imaging capability is at first estimated by numerical simulation which demonstrates the dependence of cross-range resolution and side/grating lobe level on both the operational bandwidth and spatial sampling. Experimental results from 2-D synthetic aperture (SAR) measurements validate the possibility of using UWB radar to image a human body. A thinning technique that allows for a sparse aperture is further applied to reduce the number of required measurements for the practical use.