| Presentation | 2008/9/4 A Study on Long-term Statistics of the Rain Attenuation Characteristics in Ka and Ku Band Satellite Communication Links Yasuyuki MAEKAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The long-term rain attenuation statistics of cumulative time percentages are obtained from Ka and Ku band satellite signal observations conducted at Osaka Electro-Communication University in Neyagawa, Osaka, from 1986 to 2006. The long-term statistics for about 20 years are compared with the recent ITU-R predictions, being in very good agreement with the predictions obtained for both frequency bands using 0.01% rainfall rate. On the other hand, their 0.01% values indicate fairly large yearly variations which amount to about 20% of each value. Besides the yearly rainfall rate statistics, these variations seem to be caused by those of the equivalent rain path length at each year, which becomes longer as the average ground temperature at rain time from May to October becomes higher. However, the increase of the equivalent rain path length is not simply explained in term of the rise of rain height with the ground temperature, but rather related to the occurrence of rain attenuation due to tropical-type rainfall such as shower and typhoon in summer time. Also, the equivalent path length at each year seems to be determined by the occurrence rate of the tropical rain types and the difference of their rain path lengths from those of other rain types obtained from the long-term statistics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite communications / Rain attenuation / Ka-band / Ku-band / Long-term statistics / Equivalent rain path length |
| Paper # | A・P2008-75 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 2008/9/4(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Antennas and Propagation (A・P) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Long-term Statistics of the Rain Attenuation Characteristics in Ka and Ku Band Satellite Communication Links |
| Sub Title (in English) | |
| Keyword(1) | Satellite communications |
| Keyword(2) | Rain attenuation |
| Keyword(3) | Ka-band |
| Keyword(4) | Ku-band |
| Keyword(5) | Long-term statistics |
| Keyword(6) | Equivalent rain path length |
| 1st Author's Name | Yasuyuki MAEKAWA |
| 1st Author's Affiliation | Osaka Electro-Communication University() |
| Date | 2008/9/4 |
| Paper # | A・P2008-75 |
| Volume (vol) | vol.108 |
| Number (no) | 201 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |