| Presentation | 2008-07-25 Results of New Assessment of Terrestrial Digital Broadcasting Satellite Retransmission System Availability by Using Non-snow Attached LuneQ Antenna Takeshi Hatsuda, Yasutaka Iwamori, Manabu Sasaki, Yosiyuki Tushima, Noritami Yoshimura, Kenichirou Kawasaki, Takaaki Zakouji, Takahisa Yamashita, Masatosi Kuroda, katuki Imai, Yasuyuki Maekawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To accomplish the satellite retransmission system for terrestrial digital broadcasting CTV signals, snow attenuation due to snow attachment on the antenna dish in snow climate areas in northern parts of Japan should be clarified. To address these issues, experiments to investigate the snow attenuation characteristics of the parabola antenna, Lune-Q antenna, negative-gradient slanted polymer-shielded Lune-Q antenna etc. were carried out by using the JSAT satellite transponder. Though those experiments, it becomes clear that the signal attenuations due to rain or snow are different between types of antenna. The reasons of signal attenuation difference comes from water or snow attachment on main dish or feeders. The processed results of horizontally implemented Lune-Q. antenna attenuation characteristics due to rain attachment are reported. By using the negative-slanted non-snow attached Lune-Q antenna, satellite link unavailability can be largely improved, compared with conventional stochastic attenuation data measured by parabola antenna. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | terrestrial digital broadcasting CTV signals / Lune-Q antenna / non-snow attached Lune-Q antenna |
| Paper # | SAT2008-15 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2008/7/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Results of New Assessment of Terrestrial Digital Broadcasting Satellite Retransmission System Availability by Using Non-snow Attached LuneQ Antenna |
| Sub Title (in English) | |
| Keyword(1) | terrestrial digital broadcasting CTV signals |
| Keyword(2) | Lune-Q antenna |
| Keyword(3) | non-snow attached Lune-Q antenna |
| 1st Author's Name | Takeshi Hatsuda |
| 1st Author's Affiliation | Hatsuda Professional Office() |
| 2nd Author's Name | Yasutaka Iwamori |
| 2nd Author's Affiliation | Hokkido Inst. of Tech. |
| 3rd Author's Name | Manabu Sasaki |
| 3rd Author's Affiliation | JSAT Corporation |
| 4th Author's Name | Yosiyuki Tushima |
| 4th Author's Affiliation | JSAT Corporation |
| 5th Author's Name | Noritami Yoshimura |
| 5th Author's Affiliation | JSAT Corporation |
| 6th Author's Name | Kenichirou Kawasaki |
| 6th Author's Affiliation | SKYPerfect Communications, Inc. |
| 7th Author's Name | Takaaki Zakouji |
| 7th Author's Affiliation | SKYPerfect Communications, Inc. |
| 8th Author's Name | Takahisa Yamashita |
| 8th Author's Affiliation | SEI Hybrid Products, Inc. |
| 9th Author's Name | Masatosi Kuroda |
| 9th Author's Affiliation | SEI Hybrid Products, Inc. |
| 10th Author's Name | katuki Imai |
| 10th Author's Affiliation | SEI Hybrid Products, Inc. |
| 11th Author's Name | Yasuyuki Maekawa |
| 11th Author's Affiliation | Osaka Electro-Communication University |
| Date | 2008-07-25 |
| Paper # | SAT2008-15 |
| Volume (vol) | vol.108 |
| Number (no) | 149 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |