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Distributed Jamming Method for ASLC Systems Based on Random Phase Perturbation.

Liang Qi1,2, Jianjiang Zhou1

  • 1School of Electronic Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

Sensors (Basel, Switzerland)
|June 26, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a novel distributed jamming method using random phase perturbation to disrupt radar Adaptive Sidelobe Cancellation (ASLC). The technique effectively degrades ASLC performance by creating non-stationary jamming signals, significantly reducing the cancellation ratio.

Keywords:
adaptive sidelobe cancellationdistributed jammingnon-stationary jammingrandom phase perturbationsynchronization accuracy

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Area of Science:

  • Electronic Warfare
  • Radar Systems Engineering
  • Signal Processing

Background:

  • Adaptive Sidelobe Cancellation (ASLC) is crucial for modern radar systems to counter active sidelobe jamming.
  • Disrupting the jamming direction tracking capability of ASLC is key to effective electronic countermeasures.

Purpose of the Study:

  • To propose and analyze a distributed jamming method based on random phase perturbation to destabilize ASLC systems.
  • To evaluate the impact of time and phase synchronization accuracy on the proposed jamming method's effectiveness.

Main Methods:

  • Developed a distributed jamming approach using two spatially separated, coherent jamming sources with random phase jumps.
  • Established an analytical model for ASLC cancellation ratio (CR) under random phase perturbation.
  • Conducted Monte Carlo simulations to assess jamming performance and sensitivity to synchronization errors.

Main Results:

  • The proposed method reduced the average ASLC CR from 26.80 dB to 20.29 dB (a 6.51 dB decrease).
  • Performance is comparable to asynchronous blinking jamming without requiring precise timing.
  • Demonstrated superior resource efficiency compared to multi-source saturation jamming (2 vs. 4 jammers).

Conclusions:

  • The random phase perturbation method offers a promising simulation-level approach to disrupt ASLC systems.
  • Quantitative results provide a theoretical reference for distributed cooperative jamming parameter design.
  • Further validation through semi-physical simulations or field trials is recommended for engineering readiness.