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Aberration reduction of acoustic mirror for ultrasonic underwater imaging sonar

Research Project

Project/Area Number 24560998
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Naval and maritime engineering
Research Institution防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群)

Principal Investigator

NAKAMURA TOSHIAKI  防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工, その他部局等, 教授 (50089885)

Co-Investigator(Kenkyū-buntansha) OGASAWARA Hanako  防衛大学校, 応用科学群, 講師 (00531782)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords海洋探査・機器 / 音響レンズ / 音響反射鏡 / アプラナート反射鏡 / シュトラウベル反射鏡 / 軸外し反射鏡 / 超音波水中映像ソーナー / アプラナートレンズ
Outline of Final Research Achievements

In this research, an aplanatic acoustic mirror which can nearly completely reduce a spherical aberration and a coma aberration for the sound ray which enters in parallel in the paraxial area was designed by the ray tracing method used for the design of optical lenses. Then, the convergence characteristics of the designed aplanatic Straubel acoustic mirror were evaluated by a numerical calculation method. Next, an aplanatic Straubel acoustic mirror and an off-axis aplanatic Straubel acoustic mirror which aimed at the effect reducing of receiving array were made, and the superior convergence characteristics were proved in water tank experiments.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (8 results)

All 2014 2013 2012

All Journal Article (4 results) (of which Acknowledgement Compliant: 1 results,  Peer Reviewed: 2 results) Presentation (4 results)

  • [Journal Article] Sound Pressure Field Focused by Off-Axis Aplanatic Straubel Acoustic Mirror2014

    • Author(s)
      Y. Sato, H. Ogasawara, K. Mizutani, T. Nakamura
    • Journal Title

      Proceedings of the 2nd International Conference and Exhibition on Underwater Acoustics

      Volume: 1 Pages: 1633-1638

    • Related Report
      2014 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] Sound Pressure Field Focused by Doublet with Acrylic Plano-Concave Lens and Silicon-Rubber Fresnel Lens2013

    • Author(s)
      Toshiaki Nakamura, Yuji Sato, Hanako Ogasawara and Koichi Mizutani
    • Journal Title

      Proceedins of 2013 MTS/IEEE OCEANS

      Volume: 1 Pages: 1-6

    • Related Report
      2013 Research-status Report
  • [Journal Article] Effect of acrylic cover on convergence property of aplanatic and hyperbolic Fresnel lenses2012

    • Author(s)
      Y. Sato, K. Mizutani, N. Wakatsuki, and T. Nakamura
    • Journal Title

      Acoustical Science and Technology

      Volume: 33 Issue: 5 Pages: 283-290

    • DOI

      10.1250/ast.33.283

    • NAID

      130001853351

    • ISSN
      0369-4232, 1346-3969, 1347-5177
    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Design and Numerical Evaluation of Off-Axis Aplanatic Straubel Mirror for Underwater Acoustic Imaging2012

    • Author(s)
      Y. Sato, K. Mizutani, N. Wakatsuki, and T. Nakamura
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 51 Issue: 7S Pages: 07GG12-07GG12

    • DOI

      10.1143/jjap.51.07gg12

    • NAID

      210000141013

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 3-Dimensional Convergence Propaerties of Off-Axis Aplanatic Straubel Acoustic Mirror2014

    • Author(s)
      Y. Sato, H. Ogasawara, K. Mizutani, T. Nakamura
    • Organizer
      Symposium on Ultrasonics
    • Place of Presentation
      Tokyo
    • Year and Date
      2014-12-03 – 2014-12-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Convergence properties of off-axis aplanatic straubel acoustic mirror2013

    • Author(s)
      Y. Sato, H. Sato, H. Ogasawara, K. Mizutani, T. Nakamura
    • Organizer
      Symposium on Ultrasonic Electronics
    • Place of Presentation
      kyouto
    • Related Report
      2013 Research-status Report
  • [Presentation] Sound Pressure Fields Focused by Apranatic Straubel Acoustic Mirror Made of Acrylic Resin2012

    • Author(s)
      T. Nakamura, S. Nishimoto, Y. Sato and K. Mizutani
    • Organizer
      11th European Conference on Underwater Acoustics
    • Place of Presentation
      エジンバラ
    • Related Report
      2012 Research-status Report
  • [Presentation] Convergence characteristics of doublet with acrylic plano-concave lens and silicon-rubber Fresnel lens2012

    • Author(s)
      H. Fukunaga, Y. Bando, Y.Sato, K. Mizutani, T. Nakamura
    • Organizer
      33rd Symposium on Ultrasonic Electronics
    • Place of Presentation
      千葉
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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