Near-field Millimeter Wave 3D Imaging Method for On-the-move Personnel

High-quality three-dimensional (3D) images are the prerequisite for the millimeter wave (MMW) security inspection system to effectively detect concealed threats. Aiming at solving the problem of image blurring caused by the translation motion of the inspected person in the near-field MMW security inspection system, this paper proposes a novel motion compensation and the corresponding 3D imaging method for on-the-move personnel. In the method, the translation movement of the inspected person is decomposed, the motion phase compensation is realized in the wavenumber domain of the echo, and then the 3D imaging of the inspected person is achieved. The method can effectively eliminate the image blur caused by the translation movement of the inspected person, and obtain high-quality 3D image of the person. Both theoretical analysis and simulation results show the effectiveness and robustness of the proposed method.