Array element localisation of rapidly deployed systems

Authors

  • Michael V. Greening Def. Sci. and Technol. Organisation, Salisbury Site, MOD Building 79, P.O. Box 1500, Salisbury, SA 5108, Australia

Keywords:

Acoustic signal processing, Inverse problems, Oceanography, Remote sensing, Sensors, Simulated annealing, Array processing techniques, Rapidly deployed systems, Standard grid search techniques

Abstract

Array processing techniques such as beamforming or matched field processing require accurate knowledge of the location of individual elements in the array. For horizontal arrays laid on the ocean floor, relative arrival times measured across the array from nearby implosive sources are often used to aid in estimating the sensor positions. However, the inverse problem of determining the sensor positions from the relative arrival times is both nonunique and ill-conditioned. Standard grid search techniques rely on very accurate measurements of the source locations and some knowledge of the array. This paper shows how simulated annealing can be used to solve the inverse problem with limited knowledge of the array or source locations. Synthetic studies show that relative sensor locations can be exactly found while tests with real data show an improvement in array gain comparable to the theoretical limit obtained from a perfectly known array.

Additional Files

Published

2000-06-01

How to Cite

1.
Greening MV. Array element localisation of rapidly deployed systems. Canadian Acoustics [Internet]. 2000 Jun. 1 [cited 2026 May 1];28(2):7-13. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1263

Issue

Vol. 28 No. 2 (2000)

Section

Technical Articles

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.