Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (7): 2194-2204.doi: 10.12305/j.issn.1001-506X.2025.07.13

• Sensors and Signal Processing • Previous Articles    

Design of waveform and mismatched filter for suppressing shift-frequency interrupted sampling repeater jamming

Kai ZHOU, Chao LI, Kun LI, Xinfeng CUI, Huiwei YAO, Dongdong CHEN   

  1. Unit 63892 of the PLA, Luoyang 471032, China
  • Received:2024-10-25 Online:2025-07-16 Published:2025-07-22
  • Contact: Kai ZHOU

Abstract:

Shift frequency interrupted sampling repeat jamming (SFISRJ) combines the advantages of both types of interference and poses a serious threat to radar detection. An anti-SFISRJ method based on waveform and mismatch filter design is proposed. Taking both interference suppression and pulse compression performance into account, an unconstrained multi-objective joint optimization model is established, the gradient of the objective function is derived, and a joint design method based on limited-memory Broyden Fletcher Goldfarb and Shannon (L-BFGS) is proposed. The feasibility of the proposed algorithm is verified simulation, especially when the real and fake targets are inseparable in the time and time-frequency domains, the proposed algorithm can achieve the best anti-interference performance compared to traditional methods.

Key words: shift-frequency interrupted sampling repeater jamming (SFISRJ), waveform design, mismatched filter, gradient descent

CLC Number: 

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