The Journal of the Marine Acoustics Society of Japan
Online ISSN : 1881-6819
Print ISSN : 0916-5835
ISSN-L : 0916-5835
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Volume 36, Issue 2
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Letter
  • Prototype Three Dimensional Sonar System for Underwater Acoustic Imaging
    Sayuri MATSUMOTO, Kageyoshi KATAKURA, Natsuki YOSHIZUMI, Mitsuhiko NAN ...
    2009 Volume 36 Issue 2 Pages 91-94
    Published: 2009
    Released on J-STAGE: February 10, 2010
    DOIhttps://doi.org/10.3135/jmasj.36.91
    JOURNAL FREE ACCESS
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    At port areas, a wide-angle underwater imaging system has been in strong demand for wide-range inspections of undersea-structures for periodic maintenance and for rapid check in case of disaster-affected. However, seawater in such areas is often turbid due to urban activities, which makes underwater imaging more difficult. Thus, we developed a prototype of three-dimensional sonar system 07 (hereinafter called System 07) with surveying support feature for portside underwater constructions. System 07 was used in a water tank, and its image performance was experimentally measured for a 6 m x 6 m field of view, with 0.1 m x 0.1 m x 0.13 m spatial resolution at an approximately 10-m range. In addition, System 07 successfully acquired acoustic images for a 1-mm-thick H-shaped aluminum plate target 1.4 m wide and high at approximately an 11-m range.
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