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Deceptive Jamming Detection for SAR Based on Cross-Track Interferometry.

Qingqing Feng1, Huaping Xu2, Zhefeng Wu3

  • 1School of Electronic and Information Engineering, Beihang University, Beijing 100191, China. 18010127731@163.com.

Sensors (Basel, Switzerland)
|July 18, 2018
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Summary
This summary is machine-generated.

This study introduces a new method using cross-track interferometry to detect deceptive jamming in synthetic aperture radar (SAR) images. The technique identifies false targets by analyzing interferometric phase differences, enhancing radar security.

Keywords:
deceptive jamming detectionelectronic counter-countermeasuresynthetic aperture radarsynthetic aperture radar interferometry

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Area of Science:

  • Radar Systems Engineering
  • Electronic Warfare
  • Signal Processing

Background:

  • Deceptive jamming poses a significant threat to Synthetic Aperture Radar (SAR) systems by generating false targets and misleading imagery.
  • Existing detection methods may struggle to effectively differentiate between genuine targets and sophisticated jamming signals.
  • Interferometric phase analysis offers a potential avenue for distinguishing true targets from deceptive jamming based on signal characteristics.

Purpose of the Study:

  • To propose and validate a novel method for detecting deceptive jamming in SAR imagery utilizing cross-track interferometry.
  • To identify and extract false targets generated by deceptive jamming signals within SAR interferograms.
  • To enhance the robustness and reliability of SAR systems against electronic warfare threats.

Main Methods:

  • Simultaneous reception of SAR echoes, including deceptive jamming, by two antennas for cross-track interferometry.
  • SAR interferometry to analyze the phase difference between target and jamming signals.
  • Phase filtering and frequency detection to isolate and extract the constant false phase signature of jamming.
  • Localization of false targets in the SAR image based on the detected interferometric anomalies.

Main Results:

  • The proposed cross-track interferometric method effectively detects deceptive jamming signals.
  • False targets generated by jamming exhibit a distinct, near-constant phase signature in the interferogram.
  • Simulation results based on the TanDEM-X system demonstrate the method's capability to identify jamming-induced false targets.

Conclusions:

  • Cross-track interferometry provides a viable approach for identifying deceptive jamming in SAR systems.
  • The method's reliance on phase differences allows for effective discrimination against false targets.
  • The validated technique contributes to improved SAR system security and operational integrity in electronic warfare environments.