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Localization of a distant ship using a guide ship and a vertical array.

H C Song1, Gihoon Byun1

  • 1Scripps Institution of Oceanography, La Jolla, California 92093-0238, USA.

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|May 4, 2021
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Summary
This summary is machine-generated.

This study introduces a novel method for estimating distant ship range in shallow waters using acoustic signal processing. The technique combines blind deconvolution, waveguide invariant, virtual receiver, and array invariant for accurate underwater navigation.

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Area of Science:

  • Ocean acoustics
  • Underwater acoustics
  • Signal processing

Background:

  • Accurate ship ranging is crucial for maritime safety and navigation.
  • Traditional methods face challenges in shallow water environments due to complex acoustic propagation.

Purpose of the Study:

  • To develop and demonstrate a novel method for estimating the range of a distant ship in shallow water.
  • To integrate multiple acoustic signal processing techniques for improved ranging accuracy.

Main Methods:

  • Utilizes a vertical array and a guide ship at a known range.
  • Combines blind deconvolution, waveguide invariant, virtual receiver (VR), and array invariant.
  • Extracts Green's function, extrapolates it using waveguide invariant, creates VRs, and applies array invariant for range estimation.

Main Results:

  • Successfully demonstrated the method using a ship of opportunity with broadband noise (100-500 Hz).
  • Employed a 56.25-m vertical array in approximately 100-m water depth.
  • The integrated approach effectively estimates the distance between the guide ship and the objective ship.

Conclusions:

  • The proposed method offers a robust solution for ship range estimation in challenging shallow water conditions.
  • Integration of advanced signal processing techniques enhances underwater acoustic ranging capabilities.