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Article

Detection of DRFM Deception Jamming Based on Diagonal Integral Bispectrum

1
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266000, China
2
Institute of Information Fusion, Naval Aviation University, Yantai 264000, China
3
Yantai Research Institute, Harbin Engineering University, Yantai 264000, China
*
Author to whom correspondence should be addressed.
Remote Sens. 2025, 17(11), 1957; https://doi.org/10.3390/rs17111957
Submission received: 22 March 2025 / Revised: 23 May 2025 / Accepted: 3 June 2025 / Published: 5 June 2025

Abstract

The transponder-style deception jamming implemented by Digital Radio Frequency Memory (DRFM) exhibits high similarity to real target radar echoes, while traditional detection methods suffer severe performance degradation under low signal-to-noise ratio (SNR) conditions. To address this issue, this paper proposes a DRFM active deception jamming detection method based on diagonal integral bispectrum, aiming to overcome the bottleneck of jamming detection under low-SNR conditions. By establishing a harmonic effect signal model for DRFM deception jamming, the cross-term generation mechanism in the bispectrum domain is revealed: the jamming signal generates dense cross-terms due to harmonic distortion, whereas the real target energy exhibits single-peak aggregation. To quantify this difference, the Diagonal Integral Bispectrum Relative Peak Height (DIBRP) is proposed to characterize the energy aggregation of true and false targets in the diagonal integral bispectrum, and the Diagonal Integral Bispectrum Approximate Entropy (DIBAE) is introduced to describe their complexity. A joint detection framework combining the DIBRP-DIBAE dual-feature space and a polynomial kernel support vector machine (SVM) is constructed to achieve active deception jamming detection. The proposed method demonstrates excellent performance under low-SNR conditions. Simulations and experimental results show that the correct detection rate reaches 92% at a jamming-to-signal ratio (JSR) and SNR of 0 dB, validating the effectiveness of the algorithm.
Keywords: radar jamming detection; active deception jamming; Diagonal Integral Bispectrum; Diagonal Integral Bispectrum Relative Peak Height (DIBRP); Diagonal Integral Bispectrum Approximate Entropy (DIBAE) radar jamming detection; active deception jamming; Diagonal Integral Bispectrum; Diagonal Integral Bispectrum Relative Peak Height (DIBRP); Diagonal Integral Bispectrum Approximate Entropy (DIBAE)

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MDPI and ACS Style

Sun, D.; Li, A.; Ding, H.; Wei, J. Detection of DRFM Deception Jamming Based on Diagonal Integral Bispectrum. Remote Sens. 2025, 17, 1957. https://doi.org/10.3390/rs17111957

AMA Style

Sun D, Li A, Ding H, Wei J. Detection of DRFM Deception Jamming Based on Diagonal Integral Bispectrum. Remote Sensing. 2025; 17(11):1957. https://doi.org/10.3390/rs17111957

Chicago/Turabian Style

Sun, Dianxing, Ao Li, Hao Ding, and Jifeng Wei. 2025. "Detection of DRFM Deception Jamming Based on Diagonal Integral Bispectrum" Remote Sensing 17, no. 11: 1957. https://doi.org/10.3390/rs17111957

APA Style

Sun, D., Li, A., Ding, H., & Wei, J. (2025). Detection of DRFM Deception Jamming Based on Diagonal Integral Bispectrum. Remote Sensing, 17(11), 1957. https://doi.org/10.3390/rs17111957

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