| Presentation | 2022-12-16 Radar Target Modeling by Employing Directional Point Source Hirokazu Kobayashi, Hirohisa Oda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Electromagnetic scattering analysis using the point source is the most useful and simple method to evaluate radar performance, especially in imaging such as SAR and ISAR. In this case, we usually employ the point source as an omni-directional very small point scatterer. When calculating the radar image by point sources located on the surrounding outer boundary of the target, the point source modeling cannot sufficiently simulate actual scattering because of the scattering wave to the object inside due to their omni-directivity. In this paper, we propose a new concept that the added directional weighting function to the point source scatterer usually with omni-pattern, which leads a simple and low-cost method especially in radar image. The outside boundary of the radar target can be specifically expressed by an equation or positions of the spatial coordinates. Introducing a local coordinate around the regarding area so that deriving the outward normal vector, the point source can add the directional characteristics such as cosine pattern with arbitrary amplitude and phase information. Thus, it is considered that the analysis accuracy can be improved even with a point scatterer for 3D model that discretizes the actual outer shape of the target while keeping the computational cost relatively low. For the confirmation of this proposed method, we numerically calculate the 2D bistatic model of a conducting cylinder. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | point source / directional pattern / bistatic scattering / SAR/ISAR imaging / radar cross-section (RCS) / near-field to far-field transformation (NFFFT). |
| Paper # | SANE2022-76 |
| Date of Issue | 2022-12-08 (SANE) |
| Conference Information | |
| Committee | SANE |
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| Conference Date | 2022/12/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagasaki Public Hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ICSANE |
| Chair | Toshifumi Moriyama(Nagasaki Univ.) |
| Vice Chair | Makoto Tanaka(Tokai Univ.) / Takeshi Amishima(Meiji Univ.) |
| Secretary | Makoto Tanaka(ENRI) / Takeshi Amishima(Mitsubishi Electric) |
| Assistant | Shang Fang(Univ. of Electro-Comm) |
| 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) | Radar Target Modeling by Employing Directional Point Source |
| Sub Title (in English) | |
| Keyword(1) | point source |
| Keyword(2) | directional pattern |
| Keyword(3) | bistatic scattering |
| Keyword(4) | SAR/ISAR imaging |
| Keyword(5) | radar cross-section (RCS) |
| Keyword(6) | near-field to far-field transformation (NFFFT). |
| 1st Author's Name | Hirokazu Kobayashi |
| 1st Author's Affiliation | Electromagnetic Wave System Laboratories(Electromagnetic Wave System Lab.) |
| 2nd Author's Name | Hirohisa Oda |
| 2nd Author's Affiliation | SOGO Electronics, Inc.(SOGO) |
| Date | 2022-12-16 |
| Paper # | SANE2022-76 |
| Volume (vol) | vol.122 |
| Number (no) | SANE-312 |
| Page | pp.pp.68-73(SANE), |
| #Pages | 6 |
| Date of Issue | 2022-12-08 (SANE) |