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Scattering center extraction of InISAR imaging based on joint CLEAN and OTSU method

Aiming at scattering center extraction problem of interferometric inverse synthetic aperture radar (InISAR) imaging, a new method based on joint CLEAN and maximum between-class variance (OTSU) is proposed in this paper. Scattering center extraction of each ISAR image is a key step to achieve interferometric processing. Firstly, the CLEAN algorithm is applied to extract the scattering centers preliminarily and remove the influence of the side lobes to make a preliminary distinction of different scattering center regions of the ISAR image. The OTSU algorithm is used to accurately extract the scattering centers in the initially distinguished scattering center region. Simulation results confirmed the effectiveness of the method.