Radar bandwidth optimization for interference mitigation

Radar bandwidth optimization for interference mitigation

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This chapter investigates techniques that modify radar waveforms in order to share the band with communication systems while maximizing radar performance. These techniques are based on a coexistence strategy involving a two-step approach that characterizes the electromagnetic environment via spectrum sensing and then accesses the spectrum dynamically. Spectrum sensing can detect communication systems that are attempting to access the same band as the radar. For the paradigm considered here, the frequency locations of these communication systems are estimated using energy detection. Access to the spectrum is then achieved by identifying a channel, or sub-band, devoid of activity so as to minimize radio frequency interference (RFI). This approach avoids potentially harmful RFI while simultaneously reducing the radar spectral footprint. Proper sub-band selection is key to maximizing radar performance in the presence of RFI.

Chapter Contents:

  • 15.1 Introduction
  • 15.2 Spectrum sensing, multi-objective optimization for RFI avoidance
  • 15.3 Computational cost and RF tuning considerations
  • 15.3.1 Computational cost of WSMO
  • 15.3.2 Considerations for RF tuning
  • 15.4 Fast weighted sum multi-objective optimization for RFI avoidance
  • 15.4.1 Generation of synthetic data for fWSMO training
  • 15.4.2 Interference threshold and merge bandwidth parameter training for fWSMO
  • 15.5 Evaluation ofWSMO and fWSMO
  • 15.6 Conclusions, applications of RFI avoidance, and future work
  • References

Inspec keywords: radio spectrum management; optimisation; radar interference; signal detection

Other keywords: radar spectral footprint; interference mitigation; energy detection; modify radar waveforms; radio frequency interference minimisation; communication systems detection; electromagnetic environment; radar performance maximization; proper sub-band selection; spectrum sensing; radar bandwidth optimization; RFI

Subjects: Radio links and equipment; Optimisation techniques; Electromagnetic compatibility and interference

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