Among the various types of jamming, active deception jamming has similar characteristics to the transmitted signal. The jamming seriously affects the detection and tracking of real targets by radar. In recent years, waveform design has become an effective antijamming method with the maturity of waveform generator technology. However, most antijamming waveforms are only designed to combat a single kind of jamming. To compensate for the shortage of existing waveforms that cannot simultaneously combat compound deception jamming, we construct an interpulse–intrapulse joint frequency-coded (I-IJFC) antijamming waveform and analyze the antijamming process flow. Moreover, to reduce the influence of residual jamming, we propose an intrapulse-frequency-coded method based on jamming parameters estimation. The waveform can be used against crosspulse repeater deception jamming and interrupted sampling jamming. Then, to solve the problem that the existing algorithm cannot realize the coherent accumulation of the proposed waveform, we propose a coherent accumulation algorithm of subpulse rearrangement compensation and nonuniform discrete Fourier transform. The simulation examples show that the waveform proposed in this article performs better against compound deception jamming than existing waveforms, and the proposed algorithm can realize the coherent accumulation of I-IJFC echo signals.


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    Title :

    Random-Frequency-Coded Waveform Optimization and Signal Coherent Accumulation Against Compound Deception Jamming


    Contributors:
    Li, Yachao (author) / Wang, Jiadong (author) / Wang, Yu (author) / Zhang, Pan (author) / Zuo, Lei (author)


    Publication date :

    2023-08-01


    Size :

    5596947 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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