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Energy Function Guided Histogram Analysis for Interrupted Sampling Repeater Jamming Suppression
  • +3
  • Zijian Wang,
  • Li Jiamu,
  • Wenbo Yu,
  • Yunhua Luo,
  • Yao Zhao,
  • Zhongjun Yu
Zijian Wang
Chinese Academy of Sciences Aerospace Information Research Institute
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Li Jiamu
Chinese Academy of Sciences
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Wenbo Yu
Chinese Academy of Sciences Aerospace Information Research Institute
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Yunhua Luo
Chinese Academy of Sciences Aerospace Information Research Institute
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Yao Zhao
Chinese Academy of Sciences Aerospace Information Research Institute
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Zhongjun Yu
Chinese Academy of Sciences Aerospace Information Research Institute

Corresponding Author:yuzj@ucas.ac.cn

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Abstract

Interrupted sampling repeater jamming (ISRJ) is a novel intra-pulse coherent jamming based on digital radio frequency memory (DRFM). By repeatedly sampling and retransmitting the radar transmitting signal fragments, a series of false targets can be formed after pulse compression (PC), posing a severe threat to modern radar systems. Inspired by the energy function method and histogram analysis in image processing, an adaptive time-frequency (TF) filtering method is proposed in this letter. The ISRJ-contaminated regions can be accurately determined in the TF image after histogram analysis and subsequent energy accumulation. Guided by the energy function, the proposed method can automatically adjust the intensity threshold in TF image histogram analysis and therefore reveals better robustness compared with other competing methods. Simulations have verified the effectiveness and robustness of the proposed method against ISRJ under various circumstances.
23 Nov 2022Submitted to Electronics Letters
23 Nov 2022Submission Checks Completed
23 Nov 2022Assigned to Editor
01 Dec 2022Reviewer(s) Assigned
10 Mar 2023Editorial Decision: Revise Minor
15 Mar 20231st Revision Received
15 Mar 2023Submission Checks Completed
15 Mar 2023Assigned to Editor
15 Mar 2023Review(s) Completed, Editorial Evaluation Pending
22 Mar 2023Editorial Decision: Accept