Phaseless Terahertz Coded-Aperture Imaging Based on Generative Model*

Phaseless terahertz coded-aperture imaging (PL-TCAI) is a promising radar imaging technology that leverage the coded aperture antenna and phase recovery algorithm to achieve high-resolution, forward-looking and staring imaging without relying on relative motion. As is known, it is a severely ill-conditioned inverse problem to solve the target scattering coefficient only from intensity measurements. To relieve the illnesses and reduce the demand for intensity measurements for target reconstruction, a PL-TCAI method based on generative model is proposed. This method utilizes the alternate minimization algorithm to find the ground truth under the prior information provided by the generative model. Simulation experiments show that the proposed method can reconstruct target under low intensity measurements, and it has a competitive performance with the state-of-the-art algorithm.