System analysis and image processing for millimeter-wave holographi imaging

Millimeter-wave holographic imaging system can acquire 3D images and is nonionzing, which especially fits human imaging. Widely utilized linear antenna arrays provide high scanning speed as well as non-uniformity artifacts. In this paper, we developed a set of calibration methods and image denoising algorithms to eliminate the influences of system errors including response non-uniformity, transmission delay and background scattering. The experimental results prove that the calibration methods contribute to non-uniformity reduction. The denoising algorithm is efficient in eliminating the disturbances of artifacts related to sub-sampling.