Research on Highly Squinted SAR Imaging of sea surface in large scene

The main purpose of this work is to study the sea surface SAR imaging in large scene at large squint based on the refined facet scattering field model (RFSFM) together with the improved Nonlinear Chirp Scaling algorithm. The precise azimuth compression is obtained by considering the effect of the higher order term on the azimuth phase. The results show that in large squint angle, the sea surface texture features can be seen clearly from the SAR image, the correctness of the improved method is proved.