“…To enhance its azimuth resolution, the existing azimuth superresolution deconvolution methods can be divided into following three aspects: 1) array signal processing methods [11], [12], [13], [14], [15], [16]; 2) Bayesian methods [17], [18], [19], [20], [21], [22], [23], [24] and 3) regularization methods [25], [26], [27], The authors are with the School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China (e-mail: xingyu_tuo@163.com; mdq_uestc@163.com; yinzhang@uestc.edu.cn; yongchaozhang@uestc.edu.cn; yulinhuang@uestc. edu.cn; jyyang@uestc.edu.cn).…”