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Paper Abstract and Keywords
Presentation 2021-11-12 10:10
[Invited Talk] Applications of Electromagnetic Array-Factor for Radar Engineering
Hirokazu Kobayashi (Electromagnetic Wave System Lab.) SANE2021-54
Abstract (in Japanese) (See Japanese page) 
(in English) Array-factor (AF) theory is the widely and commonly method used to calculate and design array antenna pattern. Assuming that each element of array is a small point source, the combined electromagnetic field created due to these sources in far-region is obtained by AF. In this paper, we will make a explanation and tutorial discussion for some specific radar applications concentrated on AF, which has both simplicity and versatility. The practical four topics are prepared: First is an application to near-field to far-field transformation for evaluating antenna and RCS. Second, it is shown that radar image can be obtained by repeating transmitting and receiving from each element of array. This is considered an imaging method based on Fourier theory as same the so-called SAR, but the resolution in short-range target is more excellent than SAR. Furthermore, as a third topic, we explain the electronic beam scanning method for 3-dimensional conformal array. Finally, we discus the mechanism of MIMO virtual array as a fundamental study to combine to the conformal technology.
Keyword (in Japanese) (See Japanese page) 
(in English) array-factor / phased array / near-field to far-field transformation / near-field to far-field transformation / permittivity evaluation / conformal array / MIMO radar /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 236, SANE2021-54, pp. 114-123, Nov. 2021.
Paper # SANE2021-54 
Date of Issue 2021-11-04 (SANE) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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 SANE  
Conference Date 2021-11-11 - 2021-11-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ICSANE2021/Workshop on subsurface electromagnetic measurement 
Paper Information
Registration To SANE 
Conference Code 2021-11-SANE 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Applications of Electromagnetic Array-Factor for Radar Engineering 
Sub Title (in English)  
Keyword(1) array-factor  
Keyword(2) phased array  
Keyword(3) near-field to far-field transformation  
Keyword(4) near-field to far-field transformation  
Keyword(5) permittivity evaluation  
Keyword(6) conformal array  
Keyword(7) MIMO radar  
Keyword(8)  
1st Author's Name Hirokazu Kobayashi  
1st Author's Affiliation Electromagnetic Wave System Laboratories (Electromagnetic Wave System Lab.)
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Speaker Author-1 
Date Time 2021-11-12 10:10:00 
Presentation Time 40 minutes 
Registration for SANE 
Paper # SANE2021-54 
Volume (vol) vol.121 
Number (no) no.236 
Page pp.114-123 
#Pages 10 
Date of Issue 2021-11-04 (SANE) 

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