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| Presentation | 2011-07-15 11:00 Effects of the precipitation clouds on the propagation path of Ku-band satellite communications link in the equatorial region Yasuyuki Maekawa, Yoshiaki Shibagaki (Osaka Electro-Commun. Univ.), Toru Sato, Mamoru Yamamoto, Hiroyuki Hashiguchi (Kyoto Univ.), Shoichiro Fukao (Fukui Univ. of Tech.)  AP2011-39 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Rain attenuation statistics are obtained for both up and down links of Ku-band Superbird C, which connects the earth stations at Equatorial Atmosphere Radar (EAR) in West Sumatra, Indonesia and Research Institute of Sustainable Humanosphere (RISH) of Kyoto University in Uji, Kyoto during four years from Sept.2002 to Sept.2006. Fairly large yearly variations are found for the rain attenuation statistics at both stations in Japan and Indonesia. Especially, the equivalent propagation path lengths estimated from the equi-propability values with rain attenuation statistics show considerable correlation with the average ground temperature in rain time. These path lengths are, however, associated with convective activities in the tropics or summer time more closely than the rain heights simply expected from the ground temperature. The rain attenuation and its annual statistics are simultaneously calculated from the precipitation cloud echoes measured by the X-band meteorological radar, being in good agreement with the direct measurements by the satellite signals. The radar observations also indicate the decrease of time percentages in high attenuation range due to localized structure of the clouds. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Satellite communications / Rain attenuation / Ku-band / Equatorial region / Yearly variation / X-band radar / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 128, AP2011-39, pp. 69-74, July 2011. | |
| Paper # | AP2011-39 | |
| Date of Issue | 2011-07-06 (AP) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | AP2011-39 |
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| Conference Information | |
| Committee | AP SAT |
| Conference Date | 2011-07-13 - 2011-07-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fac. Eng., Shinshu Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Satellite Communications, Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2011-07-AP-SAT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effects of the precipitation clouds on the propagation path of Ku-band satellite communications link in the equatorial region |
| Sub Title (in English) | |
| Keyword(1) | Satellite communications |
| Keyword(2) | Rain attenuation |
| Keyword(3) | Ku-band |
| Keyword(4) | Equatorial region |
| Keyword(5) | Yearly variation |
| Keyword(6) | X-band radar |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yasuyuki Maekawa |
| 1st Author's Affiliation | Osaka Electro-Communication Univerisity (Osaka Electro-Commun. Univ.) |
| 2nd Author's Name | Yoshiaki Shibagaki |
| 2nd Author's Affiliation | Osaka Electro-Communication Univerisity (Osaka Electro-Commun. Univ.) |
| 3rd Author's Name | Toru Sato |
| 3rd Author's Affiliation | Kyoto Univerisity (Kyoto Univ.) |
| 4th Author's Name | Mamoru Yamamoto |
| 4th Author's Affiliation | Kyoto Univerisity (Kyoto Univ.) |
| 5th Author's Name | Hiroyuki Hashiguchi |
| 5th Author's Affiliation | Kyoto Univerisity (Kyoto Univ.) |
| 6th Author's Name | Shoichiro Fukao |
| 6th Author's Affiliation | Fukui University of Technology (Fukui Univ. of Tech.) |
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| Speaker | Author-1 |
| Date Time | 2011-07-15 11:00:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2011-39 |
| Volume (vol) | vol.111 |
| Number (no) | no.128 |
| Page | pp.69-74 |
| #Pages | 6 |
| Date of Issue | 2011-07-06 (AP) |
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