Imaging of concealed objects on moving persons by creating synthetic aperture due to their natural motion

This paper considers a microwave screening system architecture in which inverse synthetic aperture is formed by the natural motion of the subject in the vicinity of a stationary linear antenna array. The experimental data are obtained with the described setup and the stop motion technique in which the subject's motion is imitated by a mannequin progressively driven near a linear antenna array. The microwave system is complemented with an RGB-D video sensor that provides a depth map of the probed scene. Possible ways of joint optical and radar data processing and visualization are presented. The resulting radar images illustrate how the presence of an RGB-D video sensor in the radar system may influence the requirement to the radar bandwidth.