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Paper Abstract and Keywords
Presentation 2026-07-10 14:30
Maximum-Likelihood Radar Imaging Using Multiple Scanning Measurements
Etsuro Nakayama, Takuya Sakamoto (Kyoto Univ.) EMT2026-38 MW2026-61 OPE2026-44 EST2026-42 MWPTHz2026-53
Abstract (in Japanese) (See Japanese page) 
(in English) In synthetic aperture radar imaging of the human body, respiratory-induced displacement causes ghost artifacts. Conventional kurtosis-based autofocus techniques prioritize image focusing, often resulting in inaccurate target localization. This study proposes an imaging method that estimates the center position of respiratory displacement by modeling the skin movement as a sinusoidal wave and adopting maximum likelihood estimation based on multiple mechanical scans of a radar system.
In simulations using a point target in simple harmonic motion, the proposed method reduced the mean absolute error by 96.4% compared with the conventional method.
Furthermore, even in the presence of irregular movements simulating physiological micro-motions such as heartbeats, the proposed method reduced the mean absolute error by 92.5%.
Keyword (in Japanese) (See Japanese page) 
(in English) millimeter wave / radar imaging / maximum likelihood estimation / respiratory motion / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 99, EST2026-42, pp. 184-189, July 2026.
Paper # EST2026-42 
Date of Issue 2026-07-02 (EMT, MW, OPE, EST, MWPTHz) 
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 EMT2026-38 MW2026-61 OPE2026-44 EST2026-42 MWPTHz2026-53

Conference Information
Committee OPE EST MWPTHz MW EMT IEE-EMT  
Conference Date 2026-07-09 - 2026-07-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Kushiro Chamber of Commerce and Industry 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Workshop on Optical and Microwave technologies 
Paper Information
Registration To EST 
Conference Code 2026-07-OPE-EST-MWPTHz-MW-EMT-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Maximum-Likelihood Radar Imaging Using Multiple Scanning Measurements 
Sub Title (in English)  
Keyword(1) millimeter wave  
Keyword(2) radar imaging  
Keyword(3) maximum likelihood estimation  
Keyword(4) respiratory motion  
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1st Author's Name Etsuro Nakayama  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Takuya Sakamoto  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2026-07-10 14:30:00 
Presentation Time 25 minutes 
Registration for EST 
Paper # EMT2026-38, MW2026-61, OPE2026-44, EST2026-42, MWPTHz2026-53 
Volume (vol) vol.126 
Number (no) no.96(EMT), no.97(MW), no.98(OPE), no.99(EST), no.100(MWPTHz) 
Page pp.184-189 
#Pages 6 
Date of Issue 2026-07-02 (EMT, MW, OPE, EST, MWPTHz) 

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