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On array design for matched-field processing

Tantum1, Nolte

  • 1Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708-0291, USA.

The Journal of the Acoustical Society of America
|May 2, 2000
PubMed
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New array design guidelines for matched-field processing (MFP) are proposed, differing from conventional beamforming. These guidelines optimize source localization by ensuring unique representation of acoustic modes, even for arrays not meeting traditional beamforming standards.

Area of Science:

  • Acoustics
  • Signal Processing
  • Oceanography

Background:

  • Conventional beamforming relies on plane-wave models for array design.
  • Matched-field processing (MFP) uses complex acoustic propagation models.
  • Existing array design guidelines may not be optimal for MFP.

Purpose of the Study:

  • Propose general guidelines for array design tailored to MFP.
  • Evaluate line array configurations for source localization performance in MFP.
  • Investigate the relationship between array design and acoustic mode representation.

Main Methods:

  • Utilized a normal mode acoustic propagation model.
  • Analyzed various line array configurations.
  • Evaluated source localization performance based on array design.

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Main Results:

  • Arrays designed for MFP should uniquely represent each propagating mode.
  • Arrays not meeting conventional beamforming requirements can be sufficient for MFP.
  • Empirical analyses support theoretical guidelines for MFP array design.

Conclusions:

  • MFP requires distinct array design considerations compared to conventional beamforming.
  • Optimized array design for MFP enhances source localization accuracy.
  • The proposed guidelines offer a new framework for designing acoustic arrays for MFP.