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3D estimation of water-permeable fractures using full polarimetric MIMO borehole radar and demonstration experiment

Research Project

Project/Area Number 21K04969
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 31020:Earth resource engineering, Energy sciences-related
Research InstitutionOsaka Electro-Communication University

Principal Investigator

EBIHARA Satoshi  大阪電気通信大学, 工学部, 教授 (20301046)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywordsボアホールレーダ / 地中レーダ / アレーアンテナ / 指向性
Outline of Research at the Start

坑井内で20~200 MHz の電磁波を送受信することで、坑井周囲にある物体の位置や形状を推定するボアホールレーダがある。本研究では、このレーダへ multiple-input and multiple-output を導入し、坑井内から出射、または坑井内へ入射される電磁波の方向(仰角と方位角)を推定可能にする。さらに、レーダターゲットへ任意の偏波を入射させたとき、散乱された波の偏波を推定可能にする。このようなレーダを開発することで、将来、地下空間に重要な物体を保管するときや、重要な構造物の地下に存在するき裂や断層を計測するときに、役に立つレーダを研究開発する。

Outline of Final Research Achievements

We developed a full polarimetric radar for estimating 3D distribution and evaluated its performance at a university experiment site. Furthermore, we applied this radar to outdoor experiments. In conclusion, we found that the developed borehole radar has the expected performance as a polarimetric radar. This result suggests that the borehole radar may obtain not only the 3D position of an object but also information on the shape of fractures and faults. For example, in the geological disposal of radioactive waste, not only is it necessary to estimate the position of faults, but detailed information such as permeability is also required. This suggests that the borehole radar may be used in such applications with further research.

Academic Significance and Societal Importance of the Research Achievements

放射性廃棄物の地層処分ではき裂や断層を位置推定するだけでなく、透水性などの詳細な情報が必要である。今後、研究を進めることで、本研究で開発したボアホールレーダがこのような応用の場で使用できることを示唆している。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022 2021

All Journal Article (9 results) (of which Peer Reviewed: 8 results) Presentation (1 results) (of which Invited: 1 results)

  • [Journal Article] Influence of a Horizontally Polarized Wave Incidence on DOA Estimation by a Dipole Array Antenna in a Borehole2024

    • Author(s)
      Ebihara Satoshi、Toyozawa Kai、Hasegawa Tokuya、Tsujikawa Yuki、Koyama Koki
    • Journal Title

      IEEE Transactions on Geoscience and Remote Sensing

      Volume: 62 Pages: 1-16

    • DOI

      10.1109/tgrs.2023.3339639

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] DOA Estimation of an Inclined Conducting Cylinder with a Dipole Array Antenna in a Borehole2023

    • Author(s)
      Ebihara Satoshi、Tsujikawa Yuki、Koyama Koki
    • Journal Title

      2023 12th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)

      Volume: 1 Pages: 1-4

    • DOI

      10.1109/iwagpr57138.2023.10329241

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Full Polarimetric Borehole Radar Measurement of a Conducting Cylinder with Dipole and Loop Antenna2023

    • Author(s)
      Ebihara Satoshi、Tsujikawa Yuki、Koyama Koki
    • Journal Title

      2023 12th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)

      Volume: 1 Pages: 1-4

    • DOI

      10.1109/iwagpr57138.2023.10329264

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] DOA Estimation of an Inclined Conducting Cylinder with a Dipole Array Antenna in a Borehole2023

    • Author(s)
      S. Ebihara, Y. Tsujikawa, and K. Koyama
    • Journal Title

      The proceedings of the 12th International Workshop on Advanced Ground Penetrating Radar, Lisbon, July 5-7, 2023.

      Volume: 1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Full Polarimetric Borehole Radar Measurement of Conducting Cylinder with Dipole and Loop Antenna2023

    • Author(s)
      S. Ebihara, Y. Tsujikawa, and K. Koyama
    • Journal Title

      The proceedings of the 12th International Workshop on Advanced Ground Penetrating Radar, Lisbon, July 5-7, 2023.

      Volume: 1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Loop Array Antenna in a Borehole for Directivity to a Horizontally Polarized Wave2022

    • Author(s)
      Ebihara Satoshi、Matsumoto Masayuki
    • Journal Title

      IEEE Transactions on Geoscience and Remote Sensing

      Volume: 60 Pages: 1-10

    • DOI

      10.1109/tgrs.2022.3177444

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Estimation of the direction of an object by directional borehole radar with dipole array for a transmitter and a receiver2021

    • Author(s)
      Y. Tsujikawa, S. Ebihara, K. Koyama, T. Kako, and H. Yamamoto
    • Journal Title

      Proceedings of the 14th SEGJ International Symposium

      Volume: 1 Pages: 1-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Measurement of wave polarization scattered by a cylindrical conductor with a dipole and loop array borehole radar2021

    • Author(s)
      S. Ebihara, K. Koyama, H. Yamamoto, Y. Tsujikawa, and T. Kako
    • Journal Title

      Proceedings of the 14th SEGJ International Symposium

      Volume: 1 Pages: 1-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 坑井内ダイポールループによる導体円柱からの反射波の偏波測定2021

    • Author(s)
      小山幸輝、海老原聡、辻川裕貴
    • Journal Title

      第38回センシングフォーラム計測部門大会

      Volume: 1 Pages: 1-6

    • Related Report
      2021 Research-status Report
  • [Presentation] 地中物体の3次元位置推定のための指向性ボアホールレーダ2021

    • Author(s)
      海老原聡
    • Organizer
      IEEE AP-S Kansai Joint Chapter 特別講演
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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