A Direct Integral Imaging Method for Near-field 3-D Imaging

Millimeter wave Near-field 3-D imaging has great importance on security applications for its penetrating characteristics and the 3-D information of the target. To obtain accurate and high resolution images, we propose a direct 3-D integral method to reconstruct the 3-D images. The algorithm directly processes the scattered data without any interpolation or approximation, making it more accurate than the conventional holographic method. Experiments using simulated data verify the feasibility of the proposed method.