| Presentation | 2014/7/17 A Study of Rain Attenuation on Short-term Rainfall in Some Points with Different Yearly Rainfall Rates : A Basic Study for Compensation of Rain Attenuation by Locally Variable EIRP System for 21GHz-band Broadcasting Satellites Masashi KAMEI, Susumu NAKAZAWA, Shoji TANAKA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Satellite broadcasting in the band 21.4-22.0 GHz is expected to provide advanced broadcasting services such as UHDTV and 3DTV, etc. However, a major challenge is the large RF signal attenuation due to rainfall. We are studying a locally variable equivalent isotropically radiated power (EIRP) system by applying an on-board array-fed reflector antenna to change radiation patterns adaptively to boost the strength of the RF signals in heavy rainfall areas while maintaining a constant strength in the rest of the service area. In this system, it will be required to predict amount of rain attenuation in each point based on a nationwide forecast of rainfall rate provided by meteorological bureau and so on towards the decision of target rain attenuation compensated by changing the radiation patterns. As a basic study, we evaluated relationships between rain attenuation distributions and short-term rainfall in some points with different yearly rainfall rates. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 21GHz-band Satellite Broadcasting / Rain Attenuation Compensation / Short-term Rainfall / Adaptive Radiation Pattern |
| Paper # | A・P2014-62,SAT2014 -15 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2014/7/17(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) | A Study of Rain Attenuation on Short-term Rainfall in Some Points with Different Yearly Rainfall Rates : A Basic Study for Compensation of Rain Attenuation by Locally Variable EIRP System for 21GHz-band Broadcasting Satellites |
| Sub Title (in English) | |
| Keyword(1) | 21GHz-band Satellite Broadcasting |
| Keyword(2) | Rain Attenuation Compensation |
| Keyword(3) | Short-term Rainfall |
| Keyword(4) | Adaptive Radiation Pattern |
| 1st Author's Name | Masashi KAMEI |
| 1st Author's Affiliation | NHK Science & Technology Research Laboratories() |
| 2nd Author's Name | Susumu NAKAZAWA |
| 2nd Author's Affiliation | NHK Science & Technology Research Laboratories |
| 3rd Author's Name | Shoji TANAKA |
| 3rd Author's Affiliation | NHK Science & Technology Research Laboratories |
| Date | 2014/7/17 |
| Paper # | A・P2014-62,SAT2014 -15 |
| Volume (vol) | vol.114 |
| Number (no) | 149 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |