ISAR Imaging Under Group Sparsity Constraints Using ADMM

Abstract

In this work, an ADMM based high resolution ISAR imaging method with group sparsity constraints is proposed. This method aims to preserve the integrity of the target that is not ensured in ISAR imaging under only sparsity constraints. In the ISAR images recovered by the proposed method, it is observed that the integrity of the target is preserved. Moreover, side lobes which appear in the ISAR images recovered by the traditional FFT based techniques are also effectively suppressed.