3D Slice Imaging of Non-Line-of-Sight Targets with Millimeter Wave Radar

Abstract

In this paper, three-dimensional (3D) slice imaging of non-line-of-sight targets with a millimeter wave radar is demonstrated. In the demonstrated system, a low-cost, fully integrated AWR1843 millimeter-wave radar driven by a roller is used to scan the imaging area, and near-filed imaging of hidden targets with different positions and shapes is achieved. The influence of radar bandwidth on imaging quality is studied by comparing the images acquired under different radar bandwidths. The results show that with the increase of the radar bandwidth, clarity of the image is significantly improved, and the speckle effect around the target is also suppressed remarkably, which provides a reliable basis for achieving high-quality images with millimeter wave radars.