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Paper Abstract and Keywords
Presentation 2022-12-16 09:35
Radar Target Modeling by Employing Directional Point Source
Hirokazu Kobayashi (Electromagnetic Wave System Lab.), Hirohisa Oda (SOGO) SANE2022-76
Abstract (in Japanese) (See Japanese page) 
(in English) Electromagnetic scattering analysis using the point source is the most useful and simple method to evaluate radar performance, especially in imaging such as SAR and ISAR. In this case, we usually employ the point source as an omni-directional very small point scatterer. When calculating the radar image by point sources located on the surrounding outer boundary of the target, the point source modeling cannot sufficiently simulate actual scattering because of the scattering wave to the object inside due to their omni-directivity. In this paper, we propose a new concept that the added directional weighting function to the point source scatterer usually with omni-pattern, which leads a simple and low-cost method especially in radar image. The outside boundary of the radar target can be specifically expressed by an equation or positions of the spatial coordinates. Introducing a local coordinate around the regarding area so that deriving the outward normal vector, the point source can add the directional characteristics such as cosine pattern with arbitrary amplitude and phase information. Thus, it is considered that the analysis accuracy can be improved even with a point scatterer for 3D model that discretizes the actual outer shape of the target while keeping the computational cost relatively low. For the confirmation of this proposed method, we numerically calculate the 2D bistatic model of a conducting cylinder.
Keyword (in Japanese) (See Japanese page) 
(in English) point source / directional pattern / bistatic scattering / SAR/ISAR imaging / radar cross-section (RCS) / near-field to far-field transformation (NFFFT). / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 312, SANE2022-76, pp. 68-73, Dec. 2022.
Paper # SANE2022-76 
Date of Issue 2022-12-08 (SANE) 
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)
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Conference Information
Committee SANE  
Conference Date 2022-12-15 - 2022-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagasaki Public Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ICSANE 
Paper Information
Registration To SANE 
Conference Code 2022-12-SANE 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Radar Target Modeling by Employing Directional Point Source 
Sub Title (in English)  
Keyword(1) point source  
Keyword(2) directional pattern  
Keyword(3) bistatic scattering  
Keyword(4) SAR/ISAR imaging  
Keyword(5) radar cross-section (RCS)  
Keyword(6) near-field to far-field transformation (NFFFT).  
Keyword(7)  
Keyword(8)  
1st Author's Name Hirokazu Kobayashi  
1st Author's Affiliation Electromagnetic Wave System Laboratories (Electromagnetic Wave System Lab.)
2nd Author's Name Hirohisa Oda  
2nd Author's Affiliation SOGO Electronics, Inc. (SOGO)
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Speaker Author-1 
Date Time 2022-12-16 09:35:00 
Presentation Time 20 minutes 
Registration for SANE 
Paper # SANE2022-76 
Volume (vol) vol.122 
Number (no) no.312 
Page pp.68-73 
#Pages 6 
Date of Issue 2022-12-08 (SANE) 

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