کنفرانس مهندسی برق ایران

صفحه اصلی / سی و چهارمین کنفرانس بین المللی مهندسی برق

Near-Field Millimeter-Wave Imaging Based on FMCW MIMO-SAR Radar

نویسندگان :

Elahe Faghand¹ Esfandiar Mehrshahi²

1- دانشگاه شهید بهشتی 2- دانشگاه شهید بهشتی

کلمات کلیدی :

FMCW،MIMO Radar،SAR،Near-Field Imaging،BPA،RMA

چکیده :

his paper presents an analysis of frequency-modulated continuous-wave (FMCW) radar systems combined with multiple-input multiple-output synthetic aperture radar (MIMO-SAR) for high-resolution millimeter-wave imaging. By exploiting dense virtual array formation, MIMO-SAR enables enhanced azimuth and elevation resolution compared with conventional radar systems. The fundamental principles of virtual array generation and near-field imaging are discussed. In addition, two widely used image reconstruction techniques—the back-projection algorithm (BPA) and the range migration algorithm (RMA)—are investigated for both two-dimensional and three-dimensional imaging. Their mathematical formulations and corresponding algorithms are derived and analyzed. Finally, simulation results are presented to demonstrate and compare the imaging performance of the two methods.