I. Introduction
The deconvolution methods have been widely used in the real aperture radar (RAR) azimuth super-resolution imaging field [1]–[3]. The real aperture radar imagery is modulated by the profile of the antenna pattern in the azimuth dimension, which leads to the blurring of the adjacent targets. Based on the convolution relationship between the targets and the antenna pattern profile, various deconvolution methods have been proposed to recover the fine details of the true scene from the coarse echo signal.