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Development of Direction Finding of Man-made Noise Sources

Research Project

Project/Area Number 07650478
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 計測・制御工学
Research InstitutionThe University of Electro-Communications

Principal Investigator

HAYAKAWA Masashi  The University of Electro-Communications, Dept of Electronic Eng., Professor, 電気通信学部, 教授 (80023688)

Co-Investigator(Kenkyū-buntansha) TOKUDA Masamitsu  NTT Communication Lab., Group Leader, グループリーダ
モルチャノフ オレグ (MOLCHANOV O.)  宇宙開発事業団, EORC, 招へい研究員 (00262361)
MOLCHANOV  Oleg Now at EORC,Nasda Invited Scientist
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsMan-made Noise Sources / Direction finding
Research Abstract

Direction finding of man made noises is of essential uimportance in EMC.Though some mthods have so far beenproposed, there are problems with them.The method we proposed, has the following advantages ; (1) it provides us withthe snapshot distribution of noise sources, and (2) it is based on the measurement of multiple field components ata single point. Computer simulations have shown that we can have the distributions of right- and left-handed polarized components by using the maximum entropy concept, and the agreement with the assumed source was found to be good. Further the effect of noise on the image reconstruction was also estimated.
Finally we carried out the laboratory experiment and we obtained a good agreement with the assumed source.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] M.Hirari,M.Hayakawa: "Bayesian regularization approach to ill-posed problems with application to the direction finding of VLF/ELF radio waves" Trans.Inst.Electr.Inform.Comm.Engrs.Japan. E79-B. 63-69 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Hirari,M.Hayakawa: "A neural network for the DOA of VLF/ELF radio waves" Trans.Inst.Electr.Inform.Comm.Egrs.japan. E79-B. 1598-1605 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Suzuki,M.Hayakawa,Y.Maeda: "A propcoal on the directionfinding for man-made radio noisesourceo : Simulation experiments" Iroc.1996 Int′l Symp.on Antennas and Iropyation (Chiba,Japan). Vol.3. 729-732 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Hirari, M.Hayakawa: "Baysian regularization approach to ill-posed problems with application to the direction finding of VLF/ELF radio waves" Trans.Inst.Electr.Comm.Engrs.Japan. E79-B. 63-69 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Hirari, M.Hayakawa: "A neural network for the DOA of vlf/elf radio waves" ibid. E79-B. 1598-1605 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] N.Suzuki, M.Hayakawa, Y.Maeda: "A proposal on the direction finding for man-made noise sources : Simulation experiments" Proc.1996 Int'l Symp.on Antenna & Propagation. Vol.3. 729-732 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Hirari,M.Hayakawa: "Bayqsian regularization approach to ill-posed problems with application to the direction finding of VLF/ELF radio waves" Trans.Inst.Eleclr.Inform.Comm.Engrs.Japan. E79-B. 63-69 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M.Hirari,M.Hayakawa: "A neural network for the DOA of VLF/ELF radio waves" Trans.Inot.Eleclr.Inform.Comm.Engrs.Japan. E79-B. 1598-1605 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] N.suzuki,M.Hayakawa,Y.Maeda: "A Proposal on the direction finding for man-made radio noise sources ; Simulation Experiments" Iroc.1996 Int'l Symp.on Antennas d Propagation (chiba,Japn). vol.3. 729-732 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M.Hirari,M.Hayakawa: "Bayesian reyulaization approach to ill-posed problems with application to the direction fihding of VLF/ELF radio waves" Trans.Inst.Electr.Inform.Comm.Engrs.Japan. E79-B. 63-69 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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