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Paper Abstract and Keywords
Presentation 2013-07-24 09:30
A study on effects of site diversity techniques on the rain attenuation in Ku-band satellite communications links according to the kind of rain fronts
Yasuyuki Maekawa, Yoshiaki Shibagaki, Yomoyuki Takami (Osaka Electro-Comm. Univ.) AP2013-53
Abstract (in Japanese) (See Japanese page) 
(in English) The effects of site diversity techniques on Ku-band rain attenuation are investigated using two sets of simultaneous satellite signal observations, which have been conducted among Osaka Electro-Communication University (OECU) in Neyagawa, Kyoto University in Uji, and Shigaraki MU Observatory in Koga for about past nine years, and among the headquarters of OECU in Neyagawa and their other facilities in Shijonawate and Moriguchi for about past six years. The site diversity effects are found to be largely affected by the passing direction of rain areas characterized by each rain type, such as warm, cold, and stationary fronts or typhoon, for the horizontal site separations of 3-50 km. Also, the improvement factor of the diversity effects primarily depends on the distance between the sites projected to the rain area motions. Further analyses of the two sets of the attenuation measurements at those three locations reveal that this improvement factor can be reduced down to about 60 % of the ITU-R predictions, concerned with fixed two sites, by choosing a pair of the sites aligned nearest to the rain area motion at each rainfall event, yielding about 50% reduction of unavailable time percentages.
Keyword (in Japanese) (See Japanese page) 
(in English) Satellite Communications / Rain attenuation / Ku band / Rain area motion / Wind velocity / Rain fronts / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 151, AP2013-53, pp. 37-42, July 2013.
Paper # AP2013-53 
Date of Issue 2013-07-16 (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 SAT  
Conference Date 2013-07-23 - 2013-07-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Sun Refre Hakodate 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Communications, Antennas and Progation 
Paper Information
Registration To AP 
Conference Code 2013-07-AP-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on effects of site diversity techniques on the rain attenuation in Ku-band satellite communications links according to the kind of rain fronts 
Sub Title (in English)  
Keyword(1) Satellite Communications  
Keyword(2) Rain attenuation  
Keyword(3) Ku band  
Keyword(4) Rain area motion  
Keyword(5) Wind velocity  
Keyword(6) Rain fronts  
Keyword(7)  
Keyword(8)  
1st Author's Name Yasuyuki Maekawa  
1st Author's Affiliation Osaka Electro-Communication University (Osaka Electro-Comm. Univ.)
2nd Author's Name Yoshiaki Shibagaki  
2nd Author's Affiliation Osaka Electro-Communication University (Osaka Electro-Comm. Univ.)
3rd Author's Name Yomoyuki Takami  
3rd Author's Affiliation Osaka Electro-Communication University (Osaka Electro-Comm. Univ.)
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Speaker Author-1 
Date Time 2013-07-24 09:30:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2013-53 
Volume (vol) vol.113 
Number (no) no.151 
Page pp.37-42 
#Pages 6 
Date of Issue 2013-07-16 (AP) 

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