Super-resolution simulation of terahertz coded aperture imaging

Abstract

A terahertz imaging method based on aperture coding is proposed to solve the problems of large pixel size and low resolution of the terahertz imaging detector. The forward model of the terahertz coded incoherent imaging system is established, and the optimal coding imaging strategy is discussed. By adding coded modulation to the aperture, the image detected by the imaging detector can generate pixel-level light intensity conversion. Through the multi-frame aperture coding simulation experiment, the pixel aliasing problem caused by the detector pixel size is effectively solved, and the imaging resolution is improved to the diffraction limit of the approximate lens, so as to guide the future experiments.