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High-Performance Anti-Retransmission Deception Jamming Utilizing Range Direction Multiple Input and Multiple Output

Ruijia Wang1, Jie Chen2,3, Xing Wang4

  • 1Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China. wrjww08@163.com.

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|January 12, 2017
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Summary
This summary is machine-generated.

This study introduces a new Multiple Input Multiple Output (MIMO) Synthetic Aperture Radar (SAR) to combat retransmission deception jamming. The novel approach enhances signal clarity, improving Synthetic Aperture Radar (SAR) detection efficiency against jamming.

Keywords:
MIMOSARjamming suppressionrange directionsub-band synthesize

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Area of Science:

  • Radar Systems Engineering
  • Signal Processing
  • Electronic Warfare

Background:

  • Retransmission deception jamming poses a significant threat to Synthetic Aperture Radar (SAR) systems.
  • Jamming degrades detection efficiency and introduces false targets, complicating SAR image interpretation.

Purpose of the Study:

  • To propose and evaluate a novel Multiple Input Multiple Output (MIMO) SAR structure for suppressing retransmission deception jamming.
  • To enhance the signal-to-interference ratio and peak amplitude ratio for improved jamming resistance.

Main Methods:

  • A range direction MIMO SAR structure with antennas vertical to the azimuth is proposed.
  • Orthogonal Frequency Division Multiplexing (OFDM) Linear Frequency Modulation (LFM) sub-band signals with random initial phases are transmitted concurrently.
  • Echoes are processed to synthesize a wideband signal, degrading jamming strength and defocusing false targets.

Main Results:

  • The proposed MIMO SAR method effectively increases the signal-to-interference ratio and peak amplitude ratio.
  • Retransmission deception jamming is significantly degraded and defocused in the resulting SAR imagery.
  • Well-focused SAR images are obtained despite the jamming attempts.

Conclusions:

  • The novel range direction MIMO SAR structure offers a robust solution against retransmission deception jamming.
  • The method enhances SAR detection efficiency and ensures reliable SAR image interpretation.
  • Simulations confirm the effectiveness of the proposed MIMO SAR technique in complex jamming environments.