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Golay Complementary Waveforms in Reed-Müller Sequences for Radar Detection of Nonzero Doppler Targets.

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Summary

This study introduces a new signal processing method for Golay complementary waveforms (GCWs) to improve radar detection of multiple nonzero Doppler targets. The proposed technique enhances detection performance by reducing sidelobes and improving Doppler resolution.

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Golay complementary waveformsReed–Müller sequencesdetectionmultiple nonzero Doppler targetssidelobes suppression

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Area of Science:

  • Radar Signal Processing
  • Waveform Design
  • Target Detection

Background:

  • Golay complementary waveforms (GCWs) offer high range resolution and low sidelobes theoretically.
  • Conventional deployment of GCWs generates significant range sidelobes for nonzero Doppler targets, hindering reliable detection.
  • Existing methods struggle with accurate detection in scenarios involving multiple targets with nonzero Doppler shifts.

Purpose of the Study:

  • To develop advanced signal processing techniques for GCWs to enhance radar detection performance.
  • To address the challenge of unreliable detection caused by range sidelobes from multiple nonzero Doppler targets.
  • To improve illumination performance through optimized waveform transmission and return weighting.

Main Methods:

  • A novel signal processing procedure is proposed, building upon the Binomial Design algorithm.
  • The procedure involves altering the transmission order of GCWs using one of three proposed ordering algorithms.
  • A pointwise nonlinear processor combines outputs from the Binomial Design algorithm and the selected ordering algorithm.

Main Results:

  • Numerical simulations demonstrate superior detection performance compared to existing methods.
  • The proposed procedure achieves lower sidelobes and higher Doppler resolution in the presence of multiple nonzero Doppler targets.
  • Computational complexity of the Binomial Design and ordering algorithms was analyzed, alongside statistical performance analysis.

Conclusions:

  • The proposed signal processing procedure significantly enhances radar detection capabilities for complex target scenarios.
  • This method effectively mitigates range sidelobe issues associated with nonzero Doppler targets.
  • The findings offer a more reliable approach to radar detection, particularly in cluttered or dynamic environments.