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Enhanced range resolution: comparison with the matched filter

Enhanced range resolution: comparison with the matched filter

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In this chapter, we have presented a baseband receiver that allows an analytical treatment of the output of a SCAT-like processing and that can also be applied to RF signals. The output of the Baseband SCAT (BSCT) has been compared analytically with that of a conventional matched filter for two closely spaced scatterers. Results have shown that a bat-inspired spectrogram transformation can provide better range resolution performance than that of a conventional matched filter. The results have been derived analytically and then verified with a set of laboratory experiments at ultrasound, using phantom echoes and real targets, to assess the robustness of the algorithm with respect to operational hardware limitations and propagation effects.

Chapter Contents:

  • 3.1 Introduction
  • 3.2 Description of the spectrogram correlation and transformation model
  • 3.2.1 Cochlear block
  • 3.2.2 Temporal block
  • 3.2.3 Spectral block
  • 3.2.4 Model output
  • 3.3 The baseband spectrogram transformation receiver
  • 3.4 Response of the BSCT to two closely spaced ideal reflectors
  • 3.4.1 Central lobe suppression
  • 3.5 Experimental setup and data collection
  • 3.5.1 General settings and equipment
  • 3.5.2 Simulations
  • 3.5.3 Phantom targets
  • 3.5.4 Physical targets
  • 3.6 Results
  • 3.7 Conclusion
  • References

Inspec keywords: radar resolution

Other keywords: enhanced range resolution; baseband SCAT receiver; spectrogram correlation and transformation receiver; bat-inspired spectrogram transformation

Subjects: Radar equipment, systems and applications; Signal processing and detection

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