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Electromagnetic wave propagation in underground structures which have junctions and hollow places for mobile telecommunications

Research Project

Project/Area Number 10650386
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionFukuoka Institute of Technology

Principal Investigator

MATSUNAGA Toshiaki  Faculty of Information Engineering, Fukuoka Institute of Technology, Professor, 情報工学部, 教授 (40148911)

Co-Investigator(Kenkyū-buntansha) NODA Takeaki  Faculty of Information Engineering, Fukuoka Institute of Technology, Associate Professor, 情報工学部, 助教授 (90211466)
UCHIDA Kazunori  Faculty of Information Engineering, Fukuoka Institute of Technology, Professor, 情報工学部, 教授 (50099024)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2000: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1999: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1998: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsElectromagnetic wave propagation / FVTD method / Ray Tracing method / Underground passages / Tunnel / 電波伝搬 / トンネル / レイ・トレース
Research Abstract

Mobile telecommunications have spread out today's information society rapidly. However, since propagation characteristics of electromagnetic waves are getting worse inside underground passages and buildings with junctions and sharp bends, it is often extremely difficult to use mobile telecommunication systems inside these structures. That which are presented in this research are theoretical analyses and experimental measurements for the efficient use of electromagnetic waves in underground structures, which have basic junctions, sharp bends and passages. The method which are applied to theoretical analyses are FVTD method and Ray Tracing method. In 1998, electromagnetic waves are analysed which propagate inside a two-dimensional tunnel with a round cross section, a square tunnel with a junction, and a passageway of a building. That which are analysed in 1999 are electromagnetic waves which propagate inside a square tunnel with multiple H-junctions, and a house room. In 2000, the structure is considered which have a line-source situated inside an arbitrary point of a two-dimensional tunnel with a junction and a sharp bend. In this case, the effects only from side walls are analysed by FVTD method. Moreover, Ray Tracing method is applied to analyze electromagnetic waves which propagate inside a square tunnel and a building. At the same time, 1998 through 2000, experimental measurements are applied to measure field distributions inside scale models of the presented structures using microwaves. It should be noted that the numerical results are in good agreement with the experimental data. Thus, the results show that FVTD method and Ray Tracing method could be effective numerical analyses of the underground structures which have junctions and sharp bends.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (46 results)

All Other

All Publications (46 results)

  • [Publications] 韓郷求,内田一徳,松永利明: "FVTD法による任意折れ曲がりをもつ2次元トンネル内の電波伝搬解析"電子情報通信学会論文誌. J81-B-II-8. 781-788 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Uchida,T.Matsunaga: "Field estimation in tunnel and underground by ray tracing method"FIT Reports of Computer Science Laboratory. 10. 59-65 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 岩重二郎,内田一徳: "ビル屋上のくさび状建造物による電磁波の散乱"福岡工業大学情報科学研究所所報. 10. 67-71 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 岩重二郎,内田一徳: "導体平面上またはエッジ先端に取り付けられた導体板による電磁波の散乱"福岡工業大学情報科学研究所所報. 10. 73-77 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 内田一徳,松永利明: "レイ・トレース法による室内電波伝搬解析"福岡工業大学情報科学研究所所報. 11. 47-54 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kwang-Yeol Yoon,K.Uchida: "FVTD simulation for random rough dielectric surface scattering at low grazing angle"IEICE TRANS.ELECTRON.,. E83-C. 1836-1843 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Uchida,T.Matsunaga: "A Ray Tracing Method for Evaluating Field Distribution in Tunnels "Electronics and Communication in Japan Part I. 83-10. 11-18 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kwang-Yeol Yoon,K.Uchida: "Ray tracing analysis of large-scale random rough surface scattering and delay spread"IEICE TRANS.ELECTRON.,. E84-C. 267-270 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Uchida,T.Matsunaga: "Field Estimation in Tunnel and Underground by Ray Tracing Method"Proceedings of The Far-Eastern School Seminar on Mathematical Modeling and Numerical Analysis. 108-113 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Uchida,: "Ray tracing analysis of electromagnetic wave scattering from rough surface"1999 7th international symposium on resent advances in microwave technology proceedings. 783-786 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 達達拉,内田一徳,松永利明: "地下街およびビルの廊下内電波伝搬"映像情報メディア学会技術報告. 23-6. 21-25 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 内田一徳,松永利明 他: "モデルハウスにおける室内電波伝搬"映像情報メディア学会技術報告. 24-8. 7-12 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 河野英知,松永利明: "クランク形分岐をもつ2次元トンネル内電波伝搬のFVTD法と"映像情報メディア学会技術報告. 25-6. 1-4 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 内田一徳: "レイ・トレース法による二次元凹凸物体による散乱解析"映像情報メディア学会技術報告. 25,6. 5-10 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 内田一徳,松永利明: "レイ・トレース法による住宅内電界強度推定"映像情報メディア学会技術報告. 25-6. 55-60 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kyung-koo HAN, Kiyotoshi YASUMOTO Kazunori UCHIDA, Toshiaki Matsunaga: "FVTD analysis of radiowave propagation in two-dimensional tunnels with arbitrary bending angle"The Trans.of IEICE. J81-B-II, 8. 781-788 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazunori UCHIDA, Dala DA, Toshiaki Matsunaga, Tkeaki NODA, et al.: "Field Estimation in tunnel and underground by ray tracing method"FIT Reports of Computer Science Laboratory. 10. 59-65 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Jiro IWASHIGE, Kazunori UCHIDA, Toshiaki Matsunaga, Tkeaki NODA, et al.: "Electromagnetic field scattered by a building with a rooftop obstacle"FIT Reports of Computer Science Laboratory. 10. 67-71 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Jiro IWASHIGE, Kazunori UCHIDA, Toshiaki Matsunaga, Tkeaki NODA, et al.: "Electromagnetic field scattered by a Projection on a conducting wall or an edge"FIT Reports of Computer Science Laboratory. 10. 73-77 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazunori UCHIDA, Toshiaki Matsunaga, Takeaki Noda, et al.: "Ray tracing analysis of radio wave propagation in house"FIT Reports of Computer Science Laboratory. 11. 47-54 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kwang-Yeol YOON, Mitsuo TATEIBA, Kazunori UCHIDA: "FVTD Simulation for random rough dielectric surface scattering at low grazing angle Kazunori"IEICE Trans.Electron.. E83-C, 12. 1836-1843 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] UCHIDA, Chang-Kwon LEE, Toshiaki Matsunaga, et al.: "A ray tracing method for evaluating field distribution in tunnels"Electronics and Communications in Japan, Part 1. 83, 10. 11-18 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kwang-Yeol YOON, Mitsuo TATEIBA, Kazunori UCHIDA: "Ray tracing analysis of large-scale random rough surface scattering and delay spread"IEICE Trans.Electron., E84-C. 2. 267-270 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazunori UCHIDA, Dala DA, Toshiaki Matsunaga, et al.: "Field Estimation in tunnel and underground by ray tracing method"Proceedings of the Far-Eastern school seminar on mathematical modeling and numerical analysis.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazunori UCHIDA, Kwang-Yeol YOON, Mitsuo TATEIBA: "Ray tracing analysis of electromagnetic wave scattering from rough surface"1999 7^<th> International symposium on recent advances in microwave technology proceeding. 783-786 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Dala DA, Kazunori UCHIDA, Toshiaki Matsunaga: "Field estimation in underground passage and building's lobby"ITE Technical Report. 23, 6. 21-25 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazunori UCHIDA, Dala DA, Chang-Kwon LEE, Masao UEMURA, Toshiaki Matsunaga, et al.: "Indoor propagation in model house"ITE Technical Report. 24, 8. 7-12 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Eichi KAWANO, Toshiaki Matsunaga, Kazunori UCHIDA, et al.: "FVTD method and ray tracing method of electromagnetic wave propagation in two-dimensional tunnels with a crank branch"ITE Technical Report. 25, 6. 1-4 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazunori UCHIDA, Masao UEMURA, Souichirou TAJIMA Chang-Kwon LEE: "Ray tracing analysis of electromagnetic wave scattering by a two dimensional convex or concave cylinder"ITE Technical Report. 25, 6. 5-10 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazunori UCHIDA, Dala DA, Chang-Kwon LEE, Masao UEMURA, Toshiaki Matsunaga, et al.: "Field estimation in house based on ray tracing method"ITE Technical Report. 25, 6. 55-60 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazunori Uchida, et al.: "Ray Tracing Analysis of Large-Scale Random Rough Surface Scattering and Delay Spread"IEICE TRANS.ELECTRON.. E84-C・2. 267-270 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 松永利明,内田一徳 他: "クランク形分岐をもつ2次元トンネル内電波伝搬のFVTD法とレイ・トレース法"映像情報メディア学会技術報告. 25・6. 1-4 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 内田一徳 他: "レイ・トレース法による二次元凹凸物体による散乱解析"映像情報メディア学会技術報告. 25・6. 5-10 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 内田一徳,松永利明 他: "レイ・トレース法による住宅内電界強度の推定"映像情報メディア学会技術報告. 25・6. 55-60 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kazunori UCHIDA, et al.: "FVTD Simulation for Random Rough Dielectric Surface Scattering at Low Glazing Angle"IEICE TRANS.ELECTRON.. 83-C・12. 1836-1843 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kazunori Uchida,Toshiaki Matsunaga, et al.: "A Ray Tracing Method for Evaluating Field Dostribution in Tunnels"Electronics and Communication in Japan Part 1. 83・10. 11-18 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.UCHIDA,T.Matsunaga: "Field Estimation in Tunnel and Unerground by Ray Tracing Method"Proceedings of The Far-Eas term School Seminar on Mathematical Modeling and Numerical Analysis,. 108-113 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kazunori UCHIDA: "Ray Tracing Analysis of Electromagnetic Wave Scattering from Rough Surface"1999 7th International Symposium on Recent Advances in Microwave Technolgy Proceedings. 783-786 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 松永利明: "複数のH形分岐をもつ方形トンネル内の電界強度分布"平成11年度電気関係学会九州支部連合大会講演論文集. 455 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 内田一徳: "モデルハウスにおける室内電波伝搬"映情学技報. 24. 7-12 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 内田一徳: "レイ・トレース法による住宅内電波伝搬解析"平成11年度電気関係学会九州支部連合大会講演論文集. 461 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kazunori UCHIDA: "Field Estimation in Tunnel and Underground by Ray Tracing Method"FIT Reports of Computer Science Laboratory. 10. 59-66 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 内田一徳、松永利明 他: "FVTD法による任意折れ曲がりをもつ2次元トンネル内の電波伝搬解析" 電子情報通信学会論文誌. J81-B-II・8. 781-788 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 内田一徳、松永利明 他: "地下街およびビルの廊下内電波伝搬" 映像学技報. 23・6. 21-25 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 内田一徳、松永利明 他: "レイ・トレース法による分岐のあるトンネル内電磁界分布の推定" 平成10年度電気関係学会九州支部連合会大会論文集. 492 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 松永利明、内田一徳 他: "円形2次元トンネル内の電解強度分布" 平成10年度電気関係学会九州支部連合会大会論文集. 491 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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