UWBWA SAR imaging modeling and its time-frequency processing

In the ultra wideband, wide-angle synthetic aperture radar (UWBWA SAR) imaging, scatterers often perform the aspect angle and frequency dependent reflectivity character, which usually is neglected in traditional imaging processing. A UWBWA SAR imaging model is studied in this paper first. Based on the model, a new imaging format with time-frequency processing is proposed. The new imaging format can extract the aspect angle and frequency dependent information of scatterers, which is valuable in targets recognition. Simulations show the precision of information extraction using the new imaging format.