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Paper Abstract and Keywords
Presentation 2026-02-20 15:00
Study of GPU-based parallel backprojection for 3D mmWave SAR imaging
Masato Gocho, Isao Matsushima, Ryuhei Takahashi (MELCO) SANE2025-118
Abstract (in Japanese) (See Japanese page) 
(in English) We are developing a high-precision, high-speed GPU-based backprojection processing for 3D imaging of
hazardous objects using millimeter-wave radar. This paper demonstrates an implementation of GPU-based parallel backprojection in millimeter-wave radar image reconstruction, along with a performance improvement technique that pipelines preprocessing and main processing. After implementing parallel backprojection in C++ and CUDA, the 3D image reconstruction time was measured using experimental mmWave radar with 4 sensors, 1281 hits, and 12x16 elements. As a result, the server equipped with a 64-coe Xeon and four NVIDIA H100 GPUs was able to reconstruct 2563 pixels in 3695 milliseconds. Furthermore, we found that pipeline parallel execution of CPU preprocessing and GPUs main processing reduced imaging time to 2411 milliseconds.
Keyword (in Japanese) (See Japanese page) 
(in English) Synthetic Aperture Radar / Parallel Processing / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 358, SANE2025-118, pp. 100-103, Feb. 2026.
Paper # SANE2025-118 
Date of Issue 2026-02-12 (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)
Download PDF SANE2025-118

Conference Information
Committee SAT SANE  
Conference Date 2026-02-19 - 2026-02-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Eef-Jouhou-Plaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Application and General Issues 
Paper Information
Registration To SANE 
Conference Code 2026-02-SAT-SANE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study of GPU-based parallel backprojection for 3D mmWave SAR imaging 
Sub Title (in English)  
Keyword(1) Synthetic Aperture Radar  
Keyword(2) Parallel Processing  
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1st Author's Name Masato Gocho  
1st Author's Affiliation Mitsubishi Electric Corporation (MELCO)
2nd Author's Name Isao Matsushima  
2nd Author's Affiliation Mitsubishi Electric Corporation (MELCO)
3rd Author's Name Ryuhei Takahashi  
3rd Author's Affiliation Mitsubishi Electric Corporation (MELCO)
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Speaker Author-1 
Date Time 2026-02-20 15:00:00 
Presentation Time 20 minutes 
Registration for SANE 
Paper # SANE2025-118 
Volume (vol) vol.125 
Number (no) no.358 
Page pp.100-103 
#Pages 4 
Date of Issue 2026-02-12 (SANE) 

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