3D Imaging for 77 GHz MIMO-SAR

With the development of millimeter-wave radar technology, synthetic aperture radar (SAR) imaging with millimeter-wave radar has been widely investigated in both academic research and industrial applications. However, traditional SAR imaging algorithms mostly focus on two-dimensional information of detected targets which restricts the development of 3D scenes reconstruction applications. In this paper, a novel low-cost 3D imaging algorithm based on 77 GHz commercial millimeter-wave radar is proposed by fusing the advantages of wideband radar, SAR, and multiple-input multi-output(MIMO) radar. Through processing real data collected by a 77 GHz MIMO-SAR, the proposed algorithm is verified successfully with extracted range-azimuth-height information and is capable of reconstructing the real-world 3D scenes with high spatial resolution.