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High-fidelity deception jamming can seriously mislead Synthetic ApertureRadar (SAR) image interpretation and target detection, which is difficult toidentify or eliminate through traditional anti-jamming methods. Based on theRange-Doppler Algorithm (RDA), an anti-jamming method for SAR by using jointwaveform modulation and azimuth mismatched filtering is proposed in this paper.The signal model of SAR echo after pulse compression with deception jamming isderived from the radar detection and jamming characteristics. A multi-objectivecost function is introduced to suppress the jamming level and keep the realtarget information, parameterized with the waveform initial phase and theazimuth mismatched filter coefficients, which is optimized using thesecond-order Taylor expansion approximation and the alternating directionmultiplier method (ADMM). The performance of this proposed method is evaluatedthrough the convergence analysis and anti-jamming experiments on the pointtarget and the distributed target scenarios.

Anti-jamming Method for SAR Using Joint Waveform Modulation and Azimuth Mismatched Filtering