Abstract
Due to the rapid progress of electronic countermeasures (ECMs), the corresponding means of electronic counter countermeasures (ECCMs) are urgently needed. Due to its range-dependent feature, frequency diverse array (FDA) radar technology possesses the application potential for mainlobe jamming suppression. However, the construction of the jamming model for FDA radar is a critical and challenging problem that has not been sufficiently studied. In this article, based on the exact understandings of the time parameter and time-range relationship, the existing deceptive jamming models are analyzed and the correct modeling process is concluded. Furthermore, the complete signal processing flow related to the range parameter in the FDA radar is presented. Consequently, a novel deceptive jamming (NDJ) approach for FDA radar is proposed. NDJ can obtain the same beamforming gain as the target to avoid being suppressed at the beamforming level. Subsequently, effective deceptive jamming can be generated at different range bins to degrade the detection performance of the radar. Simulation examples demonstrate the effectiveness of our proposed method.
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