| Presentation | 2018-11-09 RCS Near-field to Far-field Transformation Estimation by Using GTD Target Models Hirokazu Kobayashi, Shun-ichi Takaoka, Yang-Lang Chang, Chih-Yuan Chu, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The measurement for radar cross-section (RCS) of electrically large object such as air-plane and for radiation pattern of large antenna are demanded strongly year by year. We discuss about near-field to far-field transformation (NFFFT) by circular/cylindrical scanning system, from which RCS can be estimated by transformed to far-region electromagnetic field from scattering near-field. The feature of our proposed method is the employment of the improved focusing factor obtained by the exact transformation integral using small objects. This compensation factor leads more accuracy estimation for strong asymmetrical object, so that RCS measurement is available even in small anechoic chamber. In this paper, we introduce the simple shaped models as a target by using geometrical theory of diffraction (GTD), and then examine the theoretical RCS and measured data in order to verify NFFFT validity and GTD usefulness. This paper shows the simple GTD models such as a conducting flat plate (strip) and if possible a two-face corner-reflector. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | radar cross-section (RCS)near-field measurementfar-field transformationNFFFTcylindrical scangeometrical theory of diffraction (GTD)MATLAB code |
| Paper # | SANE2018-77 |
| Date of Issue | 2018-11-01 (SANE) |
| Conference Information | |
| Committee | SANE |
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| Conference Date | 2018/11/7(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | China (Xuchang) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ICSANE2018 |
| Chair | Sonosuke Fukushima(ENRI) |
| Vice Chair | Toshifumi Moriyama(Nagasaki Univ.) / Akitsugu Nadai(NICT) |
| Secretary | Toshifumi Moriyama(ENRI) / Akitsugu Nadai(Univ. of Electro-Comm.) |
| Assistant | Ryo Natsuaki(Univ. of Tokyo) / Masato Yamanashi(Mitsubishi Space Software) / Takeshi Amishima(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Space, Aeronautical and Navigational Electronics |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | RCS Near-field to Far-field Transformation Estimation by Using GTD Target Models |
| Sub Title (in English) | |
| Keyword(1) | radar cross-section (RCS)near-field measurementfar-field transformationNFFFTcylindrical scangeometrical theory of diffraction (GTD)MATLAB code |
| 1st Author's Name | Hirokazu Kobayashi |
| 1st Author's Affiliation | Osaka Institute of Technology(OIT) |
| 2nd Author's Name | Shun-ichi Takaoka |
| 2nd Author's Affiliation | National Taipei University of Technology(NTUT) |
| 3rd Author's Name | Yang-Lang Chang |
| 3rd Author's Affiliation | National Taipei University of Technology(NTUT) |
| 4th Author's Name | Chih-Yuan Chu |
| 4th Author's Affiliation | National Taipei University of Technology(NTUT) |
| Date | 2018-11-09 |
| Paper # | SANE2018-77 |
| Volume (vol) | vol.118 |
| Number (no) | SANE-287 |
| Page | pp.pp.107-112(SANE), |
| #Pages | 6 |
| Date of Issue | 2018-11-01 (SANE) |