Skip to main content
Earth, Planets and Space
Download PDF

Volume 53 Supplement 4

Special Issue: Great Subduction Zone Earthquakes

  • Article
  • Published:

Synthetic aperture technique applied to a multi-beam echo sounder

Earth, Planets and Space volume 53, pages 321–326 (2001)Cite this article

Abstract

We are developing a synthetic aperture technique using a Sea Beam 2000 multi-beam echo sounder to observe subsea crustal movements for earthquake studies. Augmented by the Kinematic GPS and a motion sensor, the synthetic aperture technique was successfully applied to the Sea Beam 2000 with a 12 kHz frequency acoustic signal. The 4.3-meter long projector produces a transmission fan beam in alongtrack beamwidth of 2 degrees, but a synthesis of the data achieved about 37 m aperture length, equivalent to a 0.3 degrees alongtrack beamwidth. Bathymetry measurements at the water depth of 900 m obtained through the synthetic aperture processing show considerable improvement of the signal-to-noise ratio and reveal detailed features of the seafloor.

References

  • Asada, A., Sea Beam 2000: Bathymetric surveying with interferometry, Sea Technology, 33(6), 10–15, 1992.

    Google Scholar 

  • Asada, A. and T. Ueki, Synthetic aperture analysis using a multibeam echo sounder, J. Acoust. Soc. Jp., (E), 19(4), 259–268, 1998.

    Article  Google Scholar 

  • Capell, W. J. and K. C. Kiesel, An extend capability multibeam bathymetric mapping system, IEEE Conf. Proceedings of OCEANS’89, 1124–1136, 1989.

  • Cutrona, L. J., A comparison of sonar system performance achievable using synthetic aperture techniques, J. Acoust. Soc. Am., 58(2), 336–348, 1975.

    Article  Google Scholar 

  • Glen, M., Introducing an operational multi-beam array sonare, International hydrographic Review, XLVII(1), 35–39, 1970.

    Google Scholar 

  • Leick, A., GPS Satellite Surveying, 2nd ed., Chap. 10, pp. 380–381, John Wiley & Sons, New York, 1995.

    Google Scholar 

  • Massonnet, D., M. Rossi, C. Carmona, F. Adragna, G. Peltzer, K. Feigl, and T. Rabaute, The displacement field of the Landers earthquake mapped by radar interferometry, Nature, 364, 138–142, 1993.

    Article  Google Scholar 

  • Spiess, F. N. and V. C. Anderson, Wide swath precision echo sounder, U. S. Patent, 4, 400, 803, 1983.

    Google Scholar 

  • Stubbs, A. R., B. S. McCartney, and J. G. Legg, A method of wide swath depth measurement, International hydrographic Review, LI(1), 23–59, 1974.

    Google Scholar 

  • Talukdar, K., W. Capell, and C. Zabounidis, Sidescan survey results from a multibeam sonar system—SEA BEAM 2000, Marine Geodesy, 15, 63–79, 1992.

    Article  Google Scholar 

  • USC and GS scientific and Technical Publications Group, Narrow beam transducer sounding system yields excellent results in operation aboard U.S.C. and G.S. ship Surveyor, International hydrographic Review, XLIII(1), 37–42, 1966.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Industrial Science, University of Tokyo, 7-22-1 Roppongi, Minato-ku, Tokyo, 106-8558, Japan

    Akira Asada

  2. Japan Hydrographic Department, 5-3-1 Tsukiji, Chuo-ku, Tokyo, 104-0445, Japan

    Tetsuichiro Yabuki

Authors
  1. Akira Asada
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Tetsuichiro Yabuki
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Akira Asada.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Asada, A., Yabuki, T. Synthetic aperture technique applied to a multi-beam echo sounder. Earth Planet Sp 53, 321–326 (2001). https://doi.org/10.1186/BF03352388

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1186/BF03352388

Keywords