| Presentation | 2009-07-10 Characteristics of Measured Ku-band FSS Satellite Diversity (Sat. D) Unit and Expansion to Time delayed Diversity (TDD) System T. Hatsuda, Y. Iwamori, M. Sasaki, Y. Tushima, N. Yoshimura, T. Zakouji, K. Kawasaki, T. Yamashita, M. Kuroda, K. Imai, Y. Maekawa, |
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| Abstract(in Japanese) | (See Japanese page) | |
| Abstract(in English) | To accomplish the satellite retransmission system for terrestrial digital broadcasting TV signals, attenuation due to rain or snow attachment on the antenna dish will be severe problems. To address those issues, the diversity system is effective candidate. To verify the Sat. D system characteristics of the experimental unit of the manufactured Sat. D system, measurements of the long-term propagation experiments are carried out by using the JSAT-3 (128°E) and BS (110°E) satellite signals from Nov. 2006 to Oct. 2008. The non-snow attached Lune-Q antenna is used due to multi-satellite reception ability. The measured results clarify that by using the Sat. D unit, the satellite link unavailability time percentage of the Sat. D system can be improved by approximately 1/10^ | , that of the value obtained without the Sat. D system. On the other hand, to obtain the attenuation characteristics from the signals of both satellites and to derive the theoretical Sat. D system characteristics, propagation experiments are carried out by using a Lune-Q antenna. To expand the capability of the availability improvement of the system, combination of the Sat. D system and Time-delayed (TDD) diversity system is examined and confirmed its effectiveness. |
| Keyword(in Japanese) | (See Japanese page) | |
| Keyword(in English) | Parabola antenna / Lune-Q antenna / Non-snow attached Lune-Q antenna / Sat. D system / TDD system | |
| Paper # | SAT2009-15 | |
| Date of Issue |
| Conference Information | |
| Committee | SAT |
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| Conference Date | 2009/7/2(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) | Characteristics of Measured Ku-band FSS Satellite Diversity (Sat. D) Unit and Expansion to Time delayed Diversity (TDD) System |
| Sub Title (in English) | |
| Keyword(1) | Parabola antenna |
| Keyword(2) | Lune-Q antenna |
| Keyword(3) | Non-snow attached Lune-Q antenna |
| Keyword(4) | Sat. D system |
| Keyword(5) | TDD system |
| 1st Author's Name | T. Hatsuda |
| 1st Author's Affiliation | Hatsuda Professional Office() |
| 2nd Author's Name | Y. Iwamori |
| 2nd Author's Affiliation | ICOM Incorporated |
| 3rd Author's Name | M. Sasaki |
| 3rd Author's Affiliation | SKYperfect JSAT Corporation |
| 4th Author's Name | Y. Tushima |
| 4th Author's Affiliation | SKYperfect JSAT Corporation |
| 5th Author's Name | N. Yoshimura |
| 5th Author's Affiliation | SKYperfect JSAT Corporation |
| 6th Author's Name | T. Zakouji |
| 6th Author's Affiliation | SKYperfect JSAT Corporation |
| 7th Author's Name | K. Kawasaki |
| 7th Author's Affiliation | SKYperfect JSAT Corporation |
| 8th Author's Name | T. Yamashita |
| 8th Author's Affiliation | SEI Hybrid Products, Inc. |
| 9th Author's Name | M. Kuroda |
| 9th Author's Affiliation | SEI Hybrid Products, Inc. |
| 10th Author's Name | K. Imai |
| 10th Author's Affiliation | SEI Hybrid Products, Inc. |
| 11th Author's Name | Y. Maekawa |
| 11th Author's Affiliation | Osaka Electro-Communication University |
| Date | 2009-07-10 |
| Paper # | SAT2009-15 |
| Volume (vol) | vol.109 |
| Number (no) | 118 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |