Landmine-enhanced imaging based on migratory scattering in ultra-wideband synthetic aperture radar
Ultra-wideband Synthetic Aperture Radar (UWB SAR) imaging presents numerous challenges, but also opportunities to extract object-level information. The phenomenon of migratory scattering, which describes the aspect dependent spatial location of scattering center, is a source of information that can be mined for details about shape and size of objects. In this paper, we firstly analyze the migratory scattering phenomenon of landmine, and then a method of migratory scattering extraction is proposed. Further, we directly form the migratory scattering image instead of the conventional SAR image. Compared with the conventional SAR image, the migratory scattering image can show the information of type and size better. In the migratory scattering image, the landmine exhibits part of a circle. We can enhance landmine by circular Hough transform the migratory scattering image the migratory scattering image easily. The electromagnetic simulation result demonstrates the effectiveness of the proposed method.