Abstract:An autofocus algorithm based on RELAX is presented. Assuming there exist multiple dominant scatterers in each range bin (other smaller scatterers are treated as clutter), the algorithm performs the phase error correction and the parameter estimation of the dominant scatterers alternatively by adopting an iterative procedure. The algorithm does not require that the clutter and noise in each range bin to be of certain distribution model, and it can be used to estimate all kinds of phase errors. Thus the algorithm is very robust. The results obtained in autofocusing experiments on real SAR/ISAR data show that the algorithm is very efficacious.
郑义明; 保铮. 一种基于RELAX的SAR自聚焦算法[J]. 电子与信息学报, 2001, 23(4): 379-387 .
Zheng Yiming; Bao Zheng. AN AUTOFOCUS ALGORITHM FOR SAR BASED ON RELAX. , 2001, 23(4): 379-387 .