Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (9): 2448-2456.doi: 10.12305/j.issn.1001-506X.2021.09.10

• Sensors and Signal Processing • Previous Articles     Next Articles

Cognitive constant modulus waveform design method against interrupted sampling repeater jamming

Jinyang HE, Ziyang CHENG*, Zishu HE   

  1. School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
  • Received:2020-08-21 Online:2021-08-20 Published:2021-08-26
  • Contact: Ziyang CHENG

Abstract:

Interrupted sampling repeater jamming (ISRJ) is a kind of coherent interference and its effect on radar signals is deceptive. To solve the high grating lobe problem formed by ISRJ through matched filtering, the waveform design method of low integrated sidelobe level (ISL) is studied. Considering the constant modulus constraint of the radar transmitting signal, the optimization problem is established by minimizing ISL as the objective function. Since the problem involves a nonconvex fourth-order objective and a nonconvex constraint, it is difficult to obtain a closed-form solution. Therefore, an accelerated majorization-minimization (MM) method is designed to solve the problem. Finally, compared with the existing algorithm, the simulation results show that the waveform designed can reduce the jamming's grating lobes and counter ISRJ effectively.

Key words: interrupted-sampling, jamming countermeasure, constant modulus waveform design, majorization-minimization (MM) method

CLC Number: 

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