THz 3-D Imaging Based on Cylindrical Synthetic Aperture with sub-mm Resolution

In this paper, a high-resolution 3-D imaging approach for terahertz imaging is proposed. The imaging method is designed for non-focused terahertz time-domain spectroscopy (THz-TDS) systems with a large bandwidth using a cylindrical synthetic aperture. For the evaluation of the method, a complex test object with sub-mm features is considered.