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Paper Abstract and Keywords
Presentation 2009-06-26 15:45
Optimization of Waveforms for Acoustic Imaging with Multiple Transmitters
Toshio Ito, Masanori Sugimoto (Univ. of Tokyo.), Hiromichi Hashizume (NII) US2009-19
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose a pair of waveforms that improves the quality of images obtained by the combination of the pulse compression and the sythetic transmit aperture imaging. Signals modulated with M-sequences have been used in conventional methods, because of their orthogonality. However, image quality is degraded by noise in auto- and cross-correlations of such signals. Using a genetic algorithm, we synthesized a pair of multi-carrier signals which suppresses the correlation noise. As a result, the noise was reduced by 7.6dB compared to M-sequence signals. Improvement in image quality was also confirmed by simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) Pulse compression / Synthetic transmit aperture / M-sequences / Multi-carrier signals / Genetic algorithm / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 107, US2009-19, pp. 31-36, June 2009.
Paper # US2009-19 
Date of Issue 2009-06-19 (US) 
ISSN Print edition: ISSN 0913-5685    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 US2009-19

Conference Information
Committee US  
Conference Date 2009-06-26 - 2009-06-26 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To US 
Conference Code 2009-06-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Optimization of Waveforms for Acoustic Imaging with Multiple Transmitters 
Sub Title (in English)  
Keyword(1) Pulse compression  
Keyword(2) Synthetic transmit aperture  
Keyword(3) M-sequences  
Keyword(4) Multi-carrier signals  
Keyword(5) Genetic algorithm  
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1st Author's Name Toshio Ito  
1st Author's Affiliation University. of Tokyo (Univ. of Tokyo.)
2nd Author's Name Masanori Sugimoto  
2nd Author's Affiliation University. of Tokyo (Univ. of Tokyo.)
3rd Author's Name Hiromichi Hashizume  
3rd Author's Affiliation National Institute of Informatics (NII)
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Speaker Author-1 
Date Time 2009-06-26 15:45:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2009-19 
Volume (vol) vol.109 
Number (no) no.107 
Page pp.31-36 
#Pages 6 
Date of Issue 2009-06-19 (US) 

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