Development of the directional borehole radar with the dipole array antenna fed by coaxial cables for wide detectable range.

• Project/Area Number: 19560814
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Earth system and resources enginnering
• Research Institution: Osaka Electro-Communication University
• Principal Investigator: EBIHARA Satoshi Osaka Electro-Communication University, 工学部, 准教授 (20301046)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2007: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: ボアホールレーダ / 指向性 / アレーアンテナ / イメージング

Research Abstract

坑井から数十m以内に存在するき裂や断層の3次元イメージングを可能にする指向性ボアホールレーダを開発した。ダイポールアレーアンテナを同軸ケーブルで給電し、到達時間差で波の到来方向を推定するレーダシステムである。導体円柱とアンテナ間の干渉の度合いを定量化することに成功し、これを用いてアンテナの設計手法を確立した。この設計法では坑井の影響であるボアホール効果が十分に考慮されている。フィールド実験では6m離れた位置に存在する波源の方向を推定でき、設計手法の有効性を実証した。

Research Products

• [Journal Article] Analysis of Eccentered Dipole Antenna for Borehole Radar (2009)
  • Author(s): S. Ebihara and Y. Inoue
  • Journal Title: IEEE Transaction on Geoscience and Remote Sensing vol. 47, no. 4 Pages: 1073-1088
  • Peer Reviewed
• [Journal Article] Analysis of Eccentered Dipole Antenna for Borehole Radar (2009)
  • Author(s): S. Ebihara, Y. Inoue
  • Journal Title: IEEE Transaction on Geoscience and Remote Sensing 47 Pages: 1073-1088
  • Peer Reviewed
• [Journal Article] MoM Analysis of Dipole Antennas in Crosshole Borehole Radar,and Field Experiments (2007)
  • Author(s): S.Ebihara and Y.Hashimoto
  • Journal Title: IEEE Transaction on Geoscience and Remote Sensingl, October 2007 45 Pages: 2435-2450
  • Peer Reviewed
• [Presentation] Designing Dipole Array Antenna Fed by Coaxial Cables for Directional Borehole Radar (2009)
  • Author(s): S. Ebihara and H. Hanaoka
  • Organizer: Proceedings of the 5th International Workshop on Advanced Ground Penetrating Radar, pp. 2-6
  • Place of Presentation: Granada, Spain
• [Presentation] Influence of Eccentricity of Sonde on Direct Wave in Singlehole Borehole Radar (2009)
  • Author(s): S. Ebihara, A. Sasakura and T. Takemoto
  • Organizer: Proceedings of the 5th International Workshop on Advanced Ground Penetrating Radar, pp. 93-97
  • Place of Presentation: Granada, Spain
• [Presentation] Designing Dipole Array Antenna Fed by Coaxial Cables for Directional Borehole Radar (2009)
  • Author(s): S. Ebihara, H. Hanaoka
  • Organizer: Proceedings of the 5th International Workshop on Advanced Ground Penetrating Radar(掲載決定)
  • Place of Presentation: Granada, Spain
• [Presentation] Influence of Eccentricity of Sonde on Direct Wave in Singlehole Borehole Radar (2009)
  • Author(s): S. Ebihara, A. Sasakura, T. Takemoto
  • Organizer: Proceedings of the 5th International Workshop on Advanced Ground Penetrating Radar(掲載決定)
  • Place of Presentation: Granada, Spain
• [Presentation] Borehole Effect for Eccentered Radar Sonde (2008)
  • Author(s): S. Ebihara, Y. Inoue and A. Sasakura
  • Organizer: Proceedings of the 12th International Conference on Ground Penetrating Radar, 7 pages, on CD
  • Place of Presentation: University of Birmingham, United Kingdom
• [Presentation] Estimation of Electromagnetic Parameters by Linear Dipole Array in a Borehole (2008)
  • Author(s): H. Hanaoka, S. Ebihara, M. Note, and T. Nakatsuka
  • Organizer: Proceedings of the 12th International Conference on Ground Penetrating Radar, 5 pages, on CD
  • Place of Presentation: University of Birmingham, United Kingdom
• [Presentation] Criterion for Estimation by Reflection Measurement with Array-type Directional Borehole Radar (2008)
  • Author(s): S. Ebihara, T. Ohnoki, R. Shinoda and Y. Kishimoto
  • Organizer: Proceedings of the 12th International Conference on Ground Penetrating Radar, 6 pages, on CD
  • Place of Presentation: University of Birmingham, United Kingdom
• [Presentation] Borehole Effect for Eccentered Radar Sonde (2008)
  • Author(s): S. Ebihara, Y. Inoue, A. Sasakura
  • Organizer: Proceedings of the 12th International Conference on Ground Penetrating Radar
  • Place of Presentation: University of Birmingham, United Kingdom
• [Presentation] Criterion for Estimation by Reflection Measurement with Array-type Directional Borehole Radar (2008)
  • Author(s): S. Ebihara, T. Ohnoki, R. Shinoda, Y. Kishimoto
  • Organizer: Proceedings of the 12th International Conference on Ground Penetrating Radar
  • Place of Presentation: University of Birnirngham, United Kingdom
• [Presentation] Analysis of Dipole Antenna Eccentered in a Borehole for Borehole Radar (2007)
  • Author(s): S.Ebihara and Y.Inoue
  • Organizer: 4th International Workshop on Advanced Ground Penetrating Radar
  • Place of Presentation: Napoli,Italy
• [Presentation] Influence of Mode Conversion at Borehole on Direction Finding with Dipole Array Antenna (2007)
  • Author(s): S.Ebihara, Y.Inaida and R.Suzuki
  • Organizer: 4th International Workshop on Advanced Ground Penetrating Radar
  • Place of Presentation: Napoli,Italy
• [Presentation] ESTIMATION OF 3-D REFLECTOR POSITIONS BY DIRECTIONAL BOREHOLE RADAR WITH CYLINDRICAL DIPOLE ARRAY (2007)
  • Author(s): S.Ebihara, T.Ohnoki, R.Shinoda and Y.Kishimoto
  • Organizer: The 13th Formation Evaluation Symposium of Japan
  • Place of Presentation: Chiba,Japan
• [Presentation] Analysis of Eccentric Dipole Antenna in Cylindrical Layers for Borehole Radar Applications (2007)
  • Author(s): S.Ebihara and Y.Inoue
  • Organizer: 2007 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION
  • Place of Presentation: Niigata,JAPAN
• [Presentation] 円柱状ダイポールアレー型ボアホールレーダによる3次元位置推定 (2007)
  • Author(s): 海老原 聡, 大軒 崇文, 篠田 良, 岸本 泰幸
  • Organizer: 物理探査学会第116回学術講演会論文集
  • Place of Presentation: 早稲田大学、東京
• [Remarks]
  • URL: http://www.osakac.ac.jp/labs/ebihara/Japanese/index.htm
• [Remarks]
  • URL: http://www.osakac.ac.jp/labs/ebihara/Japanese/ebihara/PublishedPapers/papers_from2001.htm
• [Patent(Industrial Property Rights)] 三次元位置推定システム、及び、ダイポールアレイアンテナ (2009)
  • Inventor(s): 海老原聡
  • Industrial Property Rights Holder: 海老原聡
  • Filing Date: 2009-01-13
• [Patent(Industrial Property Rights)] 特許 (2009)
  • Inventor(s): 海老原聡
  • Industrial Property Rights Holder: 海老原聡
  • Industrial Property Number: 2009-004685
  • Filing Date: 2009-01-13