| Presentation | 2019-10-11 Suppression of Sidelobe Level over Specific Points in S-band Assuming International Satellite Operation Hiroaki Matsui, Osamu Yoshida, Kota Goto, Tsuyoshi Kuzumaki, Masahiko Sunagawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to operate a communication satellite, international frequency coordination with neighboring countries is required. In that coordination, satellite operators may have to mitigate the sidelobe gain over specific areas in neighboring countries to reduce the interference with them. In our study to realize this, we simulated the beamforming with directionally constrained minimization of power (DCMP) method, which can reduce the sidelobe gain by constraint conditions. We tried to examine how much the sidelobe gain over specific points of Japanese neighbors can be lowered. Some cities are selected as example points in this study. As a result, we succeeded in lowering the sidelobe gain over some cities to 13dBi and the difference of it and peak value of mainlobe is greater than 33dB. This would be enough low sidelobe gain to operate satellite without harmful interference level. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite communicationBeamformingDCMPDirectionally constrained minimization of power |
| Paper # | SAT2019-58 |
| Date of Issue | 2019-10-03 (SAT) |
| Conference Information | |
| Committee | SAT |
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| Conference Date | 2019/10/10(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | JR HAKATA CITY {10F RoomA+B} |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Fumihiro Yamashita(NTT) |
| Vice Chair | Hisashi Sujikai(NHK) / Hiroyasu Ishikawa(Nihon Univ.) |
| Secretary | Hisashi Sujikai(NTT) / Hiroyasu Ishikawa(NHK) |
| Assistant | Shinobu Nanba(KDDI Research) / Takuya Okura(NICT) |
| Paper Information | |
| Registration To | Technical Committee on Satellite Telecommunications |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Suppression of Sidelobe Level over Specific Points in S-band Assuming International Satellite Operation |
| Sub Title (in English) | |
| Keyword(1) | Satellite communicationBeamformingDCMPDirectionally constrained minimization of power |
| 1st Author's Name | Hiroaki Matsui |
| 1st Author's Affiliation | SoftBank Corp.(SoftBank) |
| 2nd Author's Name | Osamu Yoshida |
| 2nd Author's Affiliation | SoftBank Corp.(SoftBank) |
| 3rd Author's Name | Kota Goto |
| 3rd Author's Affiliation | SoftBank Corp.(SoftBank) |
| 4th Author's Name | Tsuyoshi Kuzumaki |
| 4th Author's Affiliation | SoftBank Corp.(SoftBank) |
| 5th Author's Name | Masahiko Sunagawa |
| 5th Author's Affiliation | SoftBank Corp.(SoftBank) |
| Date | 2019-10-11 |
| Paper # | SAT2019-58 |
| Volume (vol) | vol.119 |
| Number (no) | SAT-220 |
| Page | pp.pp.71-76(SAT), |
| #Pages | 6 |
| Date of Issue | 2019-10-03 (SAT) |