| Presentation | 2023-07-12 [Invited Lecture] A calculation of multiple diffraction loss using a sphere interception Shinichi Ichitsubo, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The theme of the 4th radio wave propagation modeling competition is the achieving simplification of the calculation amount of multiple-screen-diffraction for urban propagation. The method using Kirchhoff approximation is proposed. In this method, a wave source plane and an observation plane are displaced to the same sphere as a spherical wave, and a screen plate is displaced to the curved surface which touches an observation plane. Since the electrical field of the transverse direction of an observation plane becomes the same by this replacement, the calculation amount of an electrical field is reduced to 1/100, and a practical machine time is attained. Moreover, the method using a fresnel approximation and the method of a Fourier transformation of two function are also reported. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Radio Wave Propagation / Propagation Loss / Multiple-Screen-Diffraction Model / Kirchhoff approximation |
| Paper # | AP2023-40 |
| Date of Issue | 2023-07-05 (AP) |
| Conference Information | |
| Committee | AP / SANE / SAT |
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| Conference Date | 2023/7/12(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | The Citizen Activity Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Remote sensing, Sattelite Communication, Radio propagation, Antennas and Propagation |
| Chair | Kunio Sakakibara(Nagoya Inst. of Tech.) / Toshio Wakayama(Mitsubishi Electric) / Takana Kaho(Shonan Inst. of Tech.) |
| Vice Chair | YUAN Qiaowei(Tohoku Inst. of Tech.) / Takeshi Amishima(Meiji Univ.) / Atsushi Kezuka(ENRI) / Masashi Kamei(NHK) / Yoji Kishi(KDDI Research) |
| Secretary | YUAN Qiaowei(Mitsubishi Electric) / Takeshi Amishima(Iwate Univ.) / Atsushi Kezuka(Mitsubishi Electric) / Masashi Kamei(Univ. of Electro-Comm) / Yoji Kishi(NTT) |
| Assistant | Tomoki Murakami(NTT) / Junichi Naganawa(ENRI) / Yoshihiko Akamine(TRDI) / Riichiro Nagareda(KDDI Research) / Hideaki Kotake(NICT) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Space, Aeronautical and Navigational Electronics / Technical Committee on Satellite Telecommunications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Lecture] A calculation of multiple diffraction loss using a sphere interception |
| Sub Title (in English) | |
| Keyword(1) | Radio Wave Propagation |
| Keyword(2) | Propagation Loss |
| Keyword(3) | Multiple-Screen-Diffraction Model |
| Keyword(4) | Kirchhoff approximation |
| 1st Author's Name | Shinichi Ichitsubo |
| 1st Author's Affiliation | *(*) |
| Date | 2023-07-12 |
| Paper # | AP2023-40 |
| Volume (vol) | vol.123 |
| Number (no) | AP-103 |
| Page | pp.pp.49-53(AP), |
| #Pages | 5 |
| Date of Issue | 2023-07-05 (AP) |