Auto-focusing UWB radar imaging for moving human target using revised range point migration

We propose an ultra-wideband radar imaging algorithm that can be applied to moving targets with unknown speeds. The proposed method compensates for the motion of a human body to automatically generate focused images. The speed of the target is estimated using the image blurriness of the target´s head. In the estimation of speeds, we use the revised range point migration, which is known to be a fast radar imaging algorithm. Measurement results showed that the proposed method generates high-quality images for moving targets. A mannequin and a handgun were assumed as targets, of which both were clearly imaged, indicating the applicability of the proposed method to security systems.