Study of 2D Terahertz SAR Imaging Based on FMCW Radar System

Terahertz (THz) systems employing frequency-modulated continuous-wave (FMCW) radar, in conjunction with the synthetic aperture radar imaging (SAR), have demonstrated significant potential across multiple applications, including medical diagnostics, security, geospatial mapping, automotive technologies, and surveillance. The research work focuses on two-dimensional (2D) SAR imaging methods, which function at two distinct THz frequency ranges: 90–96 GHz and 196–204 GHz. The primary analysis is conducted through image reconstruction by processing uniformly sampled scene data within the CST Full Wave Simulator. In both cases, the received signals are analyzed on a planar surface, incorporating both horizontal and vertical alignments. The outcomes of this study validate the feasibility of THz-based image reconstruction.