Interference Countermeasure System Based on Time–Frequency Domain Characteristics

Duan, Lining; Du, Siyu; Quan, Yinghui; Lv, Qinzhe; Li, Shuai; Xing, Mengdao

doi:10.1109/jmass.2022.3229499

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…[4][5][6] realize the mutual cover between different sub-pulses in the pulse through intra-pulse frequency coding, so that the signal that has not been sampled by the jammer can be extracted, and it has a clear advantage in combating intermittent sampling and repeated forwarding jamming. References [17][18][19][20] based on the time-frequency analysis method can effectively distinguish the characteristics of target and jamming and suppress the intermittent sampling repeater jamming by constructing a bandpass filter, but the integrity of the target will be affected. The authors in ref.…”

Section: Introductionmentioning

confidence: 99%

Anti‐interrupted sampling repeater jamming method for random pulse repetition interval and intra‐pulse frequency agile radar

Guo,

Zhan,

et al. 2023

IET Radar Sonar & Navi

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Interrupted sampling repeater jamming can produce numerous active false targets with high fidelity, which is a significant challenge for coherent pulse radar. This poses a threat to the effectiveness of anti‐jamming technology, such as time‐frequency analysis and frequency agility for conventional constant pulse repetition interval (PRI) radar, which will render the radar inoperable to detect and track the actual target. A random PRI and intra‐pulse frequency agile radar waveform with low interception properties is proposed, which can effectively restrict the acquisition of radar waveform parameters by the jammer, destroy the coherence of jamming signals, and capture the range‐dimensional centroid feature of the echo. Accordingly, a jamming identification method based on the scale constrained Gaussian mixture model and an entity radar target energe recovery algorithm based on the neighbourhood weighted maximum entropy are proposed for target detection. Theoretical analysis and simulation experiments demonstrate the effectiveness of the proposal.

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