Microwave Imaging System Based on Synthetic Aperture Radar Algorithm

Abstract

Microwave holographic imaging is typically used to capture microwave images of targets, which is an significant part of the current field of microwave imaging technology. With the Synthetic Aperture Radar (SAR) imaging algorithm, high-resolution microwave images can be reconstructed, and the intensity of the images qualitatively shows the complex permittivity contrast of the targets. In this paper, we first derive the SAR imaging algorithm, based on the formulation of the experimental parameters and the sample- under-test (SUT), and verify the effectiveness of the imaging algorithm by simulation. Then a microwave imaging system based on SAR algorithm is designed and built according to the required parameters and experimental scheme. the image is constructed by collecting S-parameters with SAR algorithm to obtain a holographic image containing the electromagnetic parameter information of the target.