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An Automated System for Sound Localization Testing in Hearing-Impaired Listeners
07:52

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Published on: March 13, 2026

Array element localization using ship noise.

Michael G Morley1, Stan E Dosso, N Ross Chapman

  • 1School of Earth and Ocean Sciences, University of Victoria, Victoria, British Columbia, Canada.

The Journal of the Acoustical Society of America
|March 12, 2009
PubMed
Summary
This summary is machine-generated.

This study estimates hydrophone positions using ship noise. The method accurately determines receiver locations by analyzing sound arrival times, crucial for underwater acoustic arrays.

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Area of Science:

  • Oceanography
  • Acoustics
  • Array Signal Processing

Background:

  • Accurate hydrophone positioning is essential for underwater acoustic surveys.
  • Traditional methods can be complex and time-consuming.

Purpose of the Study:

  • To develop and validate a novel method for estimating hydrophone positions in a receiver array.
  • To utilize ship noise as a passive acoustic source for array localization.

Main Methods:

  • Cross-correlation of band-pass filtered hydrophone time series to obtain relative arrival times.
  • Array element localization inversion using iterated linearization of acoustic ray equations.
  • Regularization techniques incorporating prior location estimates and smoothness constraints.

Main Results:

  • High confidence in estimated receiver positions with relative uncertainties of approximately 0.2 m horizontally and 0.05-0.1 m vertically.
  • Good agreement between linearized and nonlinear (Monte Carlo) position error estimates.
  • Demonstrated feasibility of hydrophone localization using ambient ship noise.

Conclusions:

  • The proposed method provides a reliable approach for determining hydrophone array geometry.
  • Ship noise offers a practical passive source for acoustic array calibration.
  • Further investigation into geometric dependencies is needed for optimizing source localization accuracy.