| Presentation | 2012-10-24 Simulations for effects on other communication antennas by scatterd waves from a ship body for maritime satellite communications(Satellite Communication Technologies) Takahiro AOYAGI, Kouhei SUZAKI, Yoshinori SUZUKI, Takashi HIROSE, Takatoshi SUGIYAMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In maritime mobile satellite communications, receiving satellite signal level varies due to direction and motion of a ship. To compensate fluctuation of antenna directions, a satellite following system is used for a parabolic antenna on a ship. When a structure of the ship crosses the line between the antenna and the communicating satellite, the antenna stops transmitting for the satellite. Directivity of a parabolic antenna has certain spread. Thus it is needed to make some clearance between structures of the ship and antenna beam. It is important to estimate how structures of a ship affect on restriction of antenna direction and how much clearance actually needed for such situations. However, precise clearances between antenna beam and structures of a ship are not yet studied. In this report, the following two things are considered. Firstly when the beam of the transmitting antenna is towards a satellite, received levels by other antennas on the ship are calculated by numerical simulation. Secondary, received levels by other satellites are estimated by calculating a diffracted wave from square pillar which simulates a structure of a ship. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite communications / maritime / interference / diffraction / signal level |
| Paper # | SAT2012-40 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2012/10/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Simulations for effects on other communication antennas by scatterd waves from a ship body for maritime satellite communications(Satellite Communication Technologies) |
| Sub Title (in English) | |
| Keyword(1) | Satellite communications |
| Keyword(2) | maritime |
| Keyword(3) | interference |
| Keyword(4) | diffraction |
| Keyword(5) | signal level |
| 1st Author's Name | Takahiro AOYAGI |
| 1st Author's Affiliation | Graduate School of Decision Science and Technology, Tokyo Institute of Technology() |
| 2nd Author's Name | Kouhei SUZAKI |
| 2nd Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Corporation |
| 3rd Author's Name | Yoshinori SUZUKI |
| 3rd Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Corporation |
| 4th Author's Name | Takashi HIROSE |
| 4th Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Corporation |
| 5th Author's Name | Takatoshi SUGIYAMA |
| 5th Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Corporation |
| Date | 2012-10-24 |
| Paper # | SAT2012-40 |
| Volume (vol) | vol.112 |
| Number (no) | 255 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |