High-resolution automobile FMCW SAR and signal processing

Abstract

The paper presents a high-resolution automobile Frequency Modulation Continuous Wave Synthetic Aperture Radar (FMCW SAR) named MiniSAR and the procedure of its signal processing. The imaging geometry of automobile SAR is very different from that of airborne SAR, leading to a different data processing method for automobile SAR. Therefore, in the paper, we propose an image formation approach that can well handle the focusing issues of automobile SAR. The effects of the strong reflected signal and the spatial-variant synthetic aperture length are analyzed. The processed results with automobile FMCW SAR read data validate the presented method.