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2004 Fiscal Year Final Research Report Summary

Basic studies on cavity and buried object detection from borehole radar data by using FBTS method

Research Project

Project/Area Number 15560361
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Measurement engineering
Research InstitutionNagasaki University

Principal Investigator

ZHOU H.  Nagasaki University, Faulty of Engineering, Research associate, 工学部, 助手 (20346927)

Co-Investigator(Kenkyū-buntansha) TAKENAKA T.  Nagasaki University, Faulty of Engineering, professor, 工学部, 教授 (40117156)
TANAKA T.  Nagasaki Univ., Graduate School of Science & Technology, Associate professor, 大学院・生産科学研究科, 助教授 (50202172)
Project Period (FY) 2003 – 2004
KeywordsSubsurface exploration / FBTS method / Inverse problem / Antenna / Borehole radar
Research Abstract

The research group has developed a method for reconstructing 2D and 3D lossy objects with high contrast by using time-domain microwave data.
During the term of research we have carried out following research activities. (1)Simultaneous reconstructions of relative permittivity and conductivity of a 3D lossy object have succeeded from simulated data by taking the length of dipole antennas into account. (2)The 3D FBTS method has been applied to reconstruct a 2D lossless cylinder from experiment data excited and received by dipole antennas. In order to speed up the reconstruction, the received data are transformed into the data as if transmitted and received by ideal dipoles. Thus the forward simulation by using FDTD method for one transmitter and multiple receivers can be carried out simultaneously without the influence of coupling among the receiving dipole antennas. Then the transformed data are used in reconstruction. Reconstructed result is consistent with the known object both in the value of permittivity, and in the shape and size. (3)Migration velocity analysis by using genetic algorithm has been applied to field common transmitter ground penetrating data. From the distribution of relative permittivity obtained from velocity analysis the distribution of water content has been obtained. It is consistent with geological information obtained by other means.

  • Research Products

    (11 results)

All 2005 2004

All Journal Article (11 results)

  • [Journal Article] Time-domain reconstruction of lossy objects using dipole antennas2005

    • Author(s)
      Zhou H., Takenaka T, Tanaka T.
    • Journal Title

      Microwave and Optical Technology Letters 44(3)

      Pages: 238-243

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Migration velocity analysis and prestack migration of common-transmitter ground-penetrating radar data2005

    • Author(s)
      Zhou H., Sato M., Liu H.
    • Journal Title

      IEEE Transactions on Geoscience and Remote Sensing 43(l)

      Pages: 86-91

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Reconstruction of a two-dimensional object by using experimental microwave data2005

    • Author(s)
      Zhou H., Takenaka T., Tanaka T.
    • Journal Title

      Proceedings of the 10th International Symposium on Microwave and Optical Technology

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Migration velocity analysis and prestack migration of common-transmitter ground-penetrating radar data2005

    • Author(s)
      Zhou H., Sato M., Liu H.
    • Journal Title

      IEEE Transactions on Geoscience and Remote Sensing 43(1)

      Pages: 86-91

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Reconstruction of a two-dimensional object by using experimental microwave data2005

    • Author(s)
      Zhou H., Takenaka T, Tanaka T.
    • Journal Title

      Proceedings of the 10th International Symposium on Microwave and Optical Technology

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Borehole radar processing by FBTS method2004

    • Author(s)
      Zhou H., Takenaka T, Tanaka T.
    • Journal Title

      Proceedings of the 7th SEW International Symposium

      Pages: 310-313

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Reconstruction of 3-D buried objects form electromagnetic data received by inaccurately positioned receivers2004

    • Author(s)
      Zhou H., Takenaka T., Tanaka T.
    • Journal Title

      Proceedings of 2004 International Symposium on Antenna and Propagation

      Pages: 605-608

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Reconstruction of 3-D objects buried under a rough surface using inverse scattering method2004

    • Author(s)
      Zhou H., Takenaka T., Tanaka T.
    • Journal Title

      Proceedings of 2004 International Symposium on Electromagnetic Theory of the International Union of Radio Science

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Borehole radar processing by FBTS method2004

    • Author(s)
      Zhou H., Takenaka T, Tanaka T.
    • Journal Title

      Proceedings of the 7th SEGJ International Symposium

      Pages: 310-313

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Reconstruction of 3-D buried objects form electromagnetic data received by inaccurately positioned receivers2004

    • Author(s)
      Zhou H., Takenaka T, Tanaka T.
    • Journal Title

      Proceedings of 2004 International Symposium on Antenna and Propagation

      Pages: 605-608

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Reconstruction of 3-D objects buried under a rough surface using inverse scattering method2004

    • Author(s)
      Zhou H., Takenaka T, Tanaka T.
    • Journal Title

      Proceedings of 2004 International Symposium on Electromagnetic Theory of the International Union of Radio Science

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2006-07-11  

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