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Paper Abstract and Keywords
Presentation 2024-02-09 10:45
A study on the rain attenuation statistics using the different Ku-band satellite signals measured at multiple locations
Yasuyuki Maekawa (Osaka Electro-Commun. Univ.), Koichi Harada, Junichi Abe, Fumihiro Yamashita (NTT) SAT2023-71
Abstract (in Japanese) (See Japanese page) 
(in English) The signal levels of Ku-band BS broadcast radio wave and JCSAT-5A beacon radio wave have been simultaneously measured at Osaka Electro-Communication University (OECU, Neyagawa, Osaka), NTT Yokosuka R&D Center (Yokosuka, Kanagawa), and satellite base station (Matsuyama, Ehime), respectively, from April 2022 to March 2023. The yearly rain attenuation statistics at Yokosuka station shows the same increasing tendency compared to the ITU-R recommendations, as at Neyagawa station, while it is not clear at Matsuyama station. The site diversity effects among these three stations with relatively long distances of about 300 km to 700 km are almost consistent with the ITU-R recommendations. The 99.9% annual available time (0.1% unavailable time) of satellite operations is shown to be guaranteed by the rain margins of 3-5 dB at the three stations. The monthly rain attenuation statistics, however, indicate that the rain margins of 6-10 dB are required to maintain the same 99.9% available time. This increase is well explained by the worst month statistics of the ITU-R recommendations, and successfully suppressed under 3dB using the site diversity operations.
Keyword (in Japanese) (See Japanese page) 
(in English) Satellite communications / Rain attenuation / Ku-band / ITU-R recommendation / Site diversity / Worst month / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 377, SAT2023-71, pp. 63-68, Feb. 2024.
Paper # SAT2023-71 
Date of Issue 2024-02-01 (SAT) 
ISSN 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 SAT2023-71

Conference Information
Committee SAT SANE  
Conference Date 2024-02-08 - 2024-02-09 
Place (in Japanese) (See Japanese page) 
Place (in English) AmaHome PLAZA (Amami City Shimin Koryu Center) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Application and General 
Paper Information
Registration To SAT 
Conference Code 2024-02-SAT-SANE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on the rain attenuation statistics using the different Ku-band satellite signals measured at multiple locations 
Sub Title (in English)  
Keyword(1) Satellite communications  
Keyword(2) Rain attenuation  
Keyword(3) Ku-band  
Keyword(4) ITU-R recommendation  
Keyword(5) Site diversity  
Keyword(6) Worst month  
Keyword(7)  
Keyword(8)  
1st Author's Name Yasuyuki Maekawa  
1st Author's Affiliation Osaka Electro-Communidation University (Osaka Electro-Commun. Univ.)
2nd Author's Name Koichi Harada  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Junichi Abe  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Fumihiro Yamashita  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2024-02-09 10:45:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2023-71 
Volume (vol) vol.123 
Number (no) no.377 
Page pp.63-68 
#Pages 6 
Date of Issue 2024-02-01 (SAT) 

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