Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (6): 1729-1738.doi: 10.12305/j.issn.1001-506X.2025.06.01

• Electronic Technology • Previous Articles     Next Articles

An analysis of jamming method based on the correlation characteristics of modulation sequences

Pengcheng ZHANG1,*, Bo PENG1, Mingxing FANG2   

  1. 1. Test Center, National University of Defense Technology, Xi'an 710106, China
    2. Institute of Electronic Countermeasure, National University of Defense Technology, Hefei 230031, China
  • Received:2024-05-09 Online:2025-06-25 Published:2025-07-25
  • Contact: Pengcheng ZHANG

Abstract:

Phase-coded pulse compression radar can effectively identify and suppress intermitted sampling repeater jamming by using anti-jamming waveform and data post-processing technology. In order to avoid the discontinuity and periodicity of intermitted sampling repeater jamming and improve the jamming effect for radar, the phase-coded radar pulse compression principle and echo processing technology is introduced, and the correlation between the sequences of the same connection mode register in different initial states and the different connection mode register in different initial states is analyzed. On the basis of the above mentioned, a jamming method based on the correlation characteristics of modulation sequence is proposed. By randomly selecting jamming sequences from the sequence list and adopting the direct modulation emission, the random false target deception jamming or noise jamming effect can be generated. Simulation experiments verify the conclusions of the analysis, and the results show that the proposed jamming method has a good jamming effect.

Key words: pulse compression radar, phase-coded, correlated jamming, m sequence, correlation analysis

CLC Number: 

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