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Paper Abstract and Keywords
Presentation 2021-10-07 17:50
A potential cause of pulsive noises in receiving BS signals
Ryouichi Nishimura, Byeongpyo Jeong, Hajime Susukita, Takashi Takahashi (NICT) SAT2021-46
Abstract (in Japanese) (See Japanese page) 
(in English) The level of receiving BS signals is affected by various factors such as precipitation in the atmosphere and the condition of ionosphere. Another potential factor like that is an aircraft flying over the sky. Airplanes on a cruise are generally flying at approximately the altitude of the tropopause because of the atmospheric density there and the resultant fuel efficiency. We routinely recorded the level of BS signals obtained at two observation points in two locations for four weeks, and found that pulsive level changes toward both up and down occur multiple times mainly during daytime. These signals appeared in the data of one location while no such signal appear in the other location. Defined the algorithm for extracting such pulsive signals, statistics of those extracted signals are investigated. Through the careful analysis, including comparison with the actual flight schedule and the route information, it is suggested that these pulsive signals can be attributed to the interference of the direct and the reflection waves made by an aircraft passing near the propagation path of the BS signal.
Keyword (in Japanese) (See Japanese page) 
(in English) Fresnel zone / Bistatic radar / Aircraft / Remote sensing / Precipitation / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 189, SAT2021-46, pp. 17-22, Oct. 2021.
Paper # SAT2021-46 
Date of Issue 2021-09-30 (SAT) 
ISSN 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)
Download PDF SAT2021-46

Conference Information
Committee SAT  
Conference Date 2021-10-07 - 2021-10-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SAT 
Conference Code 2021-10-SAT 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A potential cause of pulsive noises in receiving BS signals 
Sub Title (in English)  
Keyword(1) Fresnel zone  
Keyword(2) Bistatic radar  
Keyword(3) Aircraft  
Keyword(4) Remote sensing  
Keyword(5) Precipitation  
1st Author's Name Ryouichi Nishimura  
1st Author's Affiliation National Institute of Information and Communications Technology (NICT)
2nd Author's Name Byeongpyo Jeong  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Hajime Susukita  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Takashi Takahashi  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2021-10-07 17:50:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2021-46 
Volume (vol) vol.121 
Number (no) no.189 
Page pp.17-22 
Date of Issue 2021-09-30 (SAT) 

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