A Study on Passive Imaging Method for Electromagnetic Radiation Sources
| Project/Area Number |
07650473
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
計測・制御工学
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
UNO Toru Tokyo University of Agriculture and Technology Faculty of Engineering Associate Professor, 工学部, 助教授 (80176718)
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| Co-Investigator(Kenkyū-buntansha) |
HE Yiwei Osaka Electro-Communication University Faculty of Engineering Assistant Professo, 工学部, 講師 (50241526)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1996: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Electromagnetic radiation sources / Electromagnetic wave / Imaging / Antenna / Electric current / magneric current |
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| Research Abstract |
A main objective of this research project is to localize and characterize the radiating sources, i.e., the primary sources, and or the secondary sources, from observed electromagnetic field. The results obtained during the term of research are summarized as follows.
1. Theoretical studies on passive imaging method : Electromagnetic radiation from a radio frequency circuit yields mainly at a bend of transmission line and a discontinuous portion of the circuit. The currents at these portions may be modeled by the electric or magnetic short dipoles. Therefore a exact inverse procedure for searching these electromagnetic radiation sources located in an arbitrary region was implemented. To illustrate the concept we dealt with a highly idealized situation, however, the analysis was a full-wave treatment, and the solution of the inverse problem was mathematically exact.
2. Experimental studies : In order to confirm the validity of the above theory, an experiment was performed using two loop antennas and or two dipole antennas located on the x-y plotter. The resultant images synthesized by the above theory show the position of the antennas are well reconstructed.
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Report
(3 results)
Research Products
(16 results)
