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Paper Abstract and Keywords
Presentation 2019-10-11 09:50
A Comparison between Long-term Rain Attenuation Statistics and ITU-R Prediction Methods in Ku-Band Satellite Links
Kosuke Yamasaki, Yasuyuki Maekawa (Osaka Electro-Comm. Univ.) SAT2019-57
Abstract (in Japanese) (See Japanese page) 
(in English) A remarkable increasing tendency of yearly rain attenuation statistics of cumulative time percentages is obtained from long-term Ku-band satellite signal observations conducted at Osaka Electro-Communication University in Neyagawa, Osaka, Japan for the past 31 years from 1988 to 2018. The recent increase in yearly rain attenuation statistics seems to be caused by the increase of equivalent rain path length for the past thirteen years. However, this increase of the path length is not simply explained in term of the rise of the rain height proportional to 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. Compared with the ITU-R predictions, the recent attenuation statistics are not fully explained by the rise of the rain height from 4 to 5km either. Instead, the horizontal reduction factor and the vertical adjustment factor are suggested to be increased by 20 % or so.
Keyword (in Japanese) (See Japanese page) 
(in English) Satellite communications / Rain attenuation / Rainfall rate / Ku-band / Long-term statistics / ITU-R prediction / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 220, SAT2019-57, pp. 61-64, Oct. 2019.
Paper # SAT2019-57 
Date of Issue 2019-10-03 (SAT) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 SAT  
Conference Date 2019-10-10 - 2019-10-11 
Place (in Japanese) (See Japanese page) 
Place (in English) JR HAKATA CITY {10F RoomA+B} 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SAT 
Conference Code 2019-10-SAT 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Comparison between Long-term Rain Attenuation Statistics and ITU-R Prediction Methods in Ku-Band Satellite Links 
Sub Title (in English)  
Keyword(1) Satellite communications  
Keyword(2) Rain attenuation  
Keyword(3) Rainfall rate  
Keyword(4) Ku-band  
Keyword(5) Long-term statistics  
Keyword(6) ITU-R prediction  
1st Author's Name Kosuke Yamasaki  
1st Author's Affiliation Osaka Electro-Communication University (Osaka Electro-Comm. Univ.)
2nd Author's Name Yasuyuki Maekawa  
2nd Author's Affiliation Osaka Electro-Communication University (Osaka Electro-Comm. Univ.)
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Date Time 2019-10-11 09:50:00 
Presentation Time 25 
Registration for SAT 
Paper # IEICE-SAT2019-57 
Volume (vol) IEICE-119 
Number (no) no.220 
Page pp.61-64 
#Pages IEICE-4 
Date of Issue IEICE-SAT-2019-10-03 

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