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Paper Abstract and Keywords
Presentation 2009-04-09 11:15
Measurements of Up- and Down-Link Propagation Characterisitics of Ku-Band Satellite Communcation Links in Temperate and Equatorial Regions
Yasuyuki Maekawa, Yoshiaki Shibagaki (Osaka Electro-Commun. Univ.), Toru Sato, Mamoru Yamamoto, Hiroyuki Hashiguchi (Kyoto Univ.), Shoichiro Fukao (Fukui Univ. of Tech.) AP2009-4
Abstract (in Japanese) (See Japanese page) 
(in English) Four-year rain attenuation statistics are obtained for both up and down links of Ku-band Superbird C, which connects the earth stations in Equatorial Atmosphere Radar (EAR) in West Sumatra, Indonesia and Research Institute of Sustainable Humanosphere (RISH) of Kyoto University in Uji, Kyoto. Their long-term statistics agree well with the ITU-R predictions, although the high attenuation range in Indonesia shows much less time percentages due to localized structure of convective clouds. Worst month cumulative time percentages compared to the yearly average statistics show larger values and variations in Japan than Indonesia, indicating that their seasonal and year-to-year variations are larger in the temperate region than the equatorial region. The attenuation ratio of up to down links, however, seems to have considerable year-to-year variability in Indonesia as well as in Japan. In Indonesia, on the other hand, heavy rainfall is concentrated in the afternoon, yielding a very large daily variation of the attenuation statistics. Also, worst hour statistics calculated on hourly basis show much larger difference from the yearly average statistics than the worst month statistics.
Keyword (in Japanese) (See Japanese page) 
(in English) Satellite communications / Rain attenuation / Ku-band / Equatorial region / Yearly variation / Daily variation / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 1, AP2009-4, pp. 19-24, April 2009.
Paper # AP2009-4 
Date of Issue 2009-04-02 (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)
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Conference Information
Committee AP  
Conference Date 2009-04-09 - 2009-04-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka Prefecture Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP 
Paper Information
Registration To AP 
Conference Code 2009-04-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurements of Up- and Down-Link Propagation Characterisitics of Ku-Band Satellite Communcation Links in Temperate and Equatorial Regions 
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) Daily variation  
Keyword(7)  
Keyword(8)  
1st Author's Name Yasuyuki Maekawa  
1st Author's Affiliation Osaka Electro-Communication University (Osaka Electro-Commun. Univ.)
2nd Author's Name Yoshiaki Shibagaki  
2nd Author's Affiliation Osaka Electro-Communication University (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 2009-04-09 11:15:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2009-4 
Volume (vol) vol.109 
Number (no) no.1 
Page pp.19-24 
#Pages 6 
Date of Issue 2009-04-02 (AP) 

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