Nonuniform ISRJ suppression based on time shift alignment and morphological processing

Abstract Non-uniform interrupted-Sampling Repeater Jamming is a coherent interference technology based on the principle of undersampling, and it has salient feature over several uniform interferences in terms pseudo-randomness, which makes more difficult for radar to detect real targets. Aiming at target detection problem non-uniform interrupted-sampling repeater jamming, method time-frequency domain suppression proposed this paper. Firstly, according short-term Fourier transform strategy, echo signal converted domain, then we select one columns matrix as reference column translating perpendicular timeline. Furthermore, distribution area accurately extracted filtered out morphological processing. Finally, simulation results prove that algorithms have an advantage jamming suppression.