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Matched-field processing using measured replica fields

Fialkowski1, Collins, Kuperman

  • 1Naval Research Laboratory, Washington, D.C. 20375, USA.

The Journal of the Acoustical Society of America
|February 25, 2000
PubMed
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Acoustic data basing bypasses complex environmental characterization for source tracking. This method uses a towed source to create an acoustic field database, simplifying environmental uncertainty challenges.

Area of Science:

  • Ocean acoustics
  • Environmental acoustics
  • Acoustic signal processing

Background:

  • Environmental uncertainty poses significant challenges in acoustic studies.
  • Traditional methods require direct environmental measurements and solving complex inverse problems.
  • Characterizing the acoustic environment is crucial for accurate source localization and tracking.

Purpose of the Study:

  • To present and validate an alternative approach to acoustic data basing for environmental uncertainty mitigation.
  • To demonstrate the efficacy of acoustic data basing in source tracking applications.
  • To reduce the computational and logistical burden associated with traditional acoustic environmental characterization.

Main Methods:

  • Utilizing data from the TESPEX experiments.

Related Experiment Videos

  • Employing acoustic data basing by towing a source through the region of interest.
  • Recording the acoustic field on an array of receivers to build a comprehensive database.
  • Using replica fields from the acoustic database for environmental source tracking.

    • Main Results:

    • The acoustic data basing approach effectively avoids the need for direct environmental parameter determination.
    • It eliminates the necessity of solving the wave equation for environmental characterization.
    • The method successfully exploits environmental complexity and source motion for tracking.

    Conclusions:

    • Acoustic data basing offers a practical alternative to traditional methods for dealing with environmental uncertainty in acoustics.
    • This technique simplifies source tracking by leveraging a pre-recorded acoustic field database.
    • The TESPEX experimental data supports the viability and efficiency of the proposed acoustic data basing approach.