The slice repeater jamming (SRJ) is coherent with the transmitted waveform and can produce many false targets after pulse compression, making it difficult for radars to detect real targets. To suppress the SRJ, an SRJ recognition and suppression method based on the coded waveform is proposed in this article. First, the design principle of the coded waveform is introduced, and the SRJ characteristics and target characteristics of the coded waveform are revealed by theoretical derivation. By adjusting the coded waveform parameters, the target peaks in the range profile may disappear so that the range profile of the coded waveform is dominated by SRJ. In addition, when subjected to the same SRJ, the positions of false targets in the coded waveform range profile are the same as those in the linear frequency modulation (LFM) waveform range profile, and this property can be used to recognize the false targets in the LFM range profile. Then, based on the relationship between the false targets in the range profiles of the two waveforms, the false targets in the LFM waveform range profile are reconstructed and suppressed. Finally, simulations are conducted to demonstrate that the proposed method is effective against different kinds of SRJ. Compared with the existing methods, the proposed method shows better jamming suppression ability in different signal-to-noise ratio and signal-to-jamming ratio scenarios.


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    Title :

    Recognition and Suppression of Slice Repeater Jamming Based on Coded Waveform


    Contributors:
    Xie, Ailun (author) / Liu, Xiaobin (author) / Wu, Qihua (author) / Liu, Zhenyu (author) / Xiao, Shunping (author)


    Publication date :

    2025-06-01


    Size :

    4441072 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English