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Paper Abstract and Keywords
Presentation 2014-04-22 14:00
Dependence of scatter size on pulse compressed parametric sound echo
Hideyuki Nomura, Hideo Adachi, Tomoo Kamakura, Gregory T. Clement (UEC) US2014-3
Abstract (in Japanese) (See Japanese page) 
(in English) The purpose of our study is the application of pulse compressed parametric sound source, which forms a low frequency directive sound beam with improved range resolution, for ultrasound distance measurement and sonography. This technique realizes ultrasonic imaging with a deeper penetration depth. In this report, the relationship between the target size and the echo level of compressed parametric sound echo was experimentally investigated to consider the detectable size of target by parametric sound. The echoes of chirp modulated parametric sound with a bandwidth of 400 kHz from the brass rods of 2-8 mm in diameter, which were settled in water were received and cross-correlated by a reference signal as a post signal processing. The experimentally obtained compressed echo level from the target of 2mm in diameter was a half of that of 8~mm in diameter, so that the target of 2 mm was able to be detected. However, it is found that appropriately designed transmitting and receiving transducers and driving signal are needed to reduce direct sound signals from the transmitting transducer for an image in a near field.
Keyword (in Japanese) (See Japanese page) 
(in English) Nonlinear sound propagation / Parametric difference frequency sound / Chirp signal / Pulse compression / Scatter / Echo / Ultrasonic imaging /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 16, US2014-3, pp. 13-17, April 2014.
Paper # US2014-3 
Date of Issue 2014-04-15 (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 US2014-3

Conference Information
Committee US  
Conference Date 2014-04-22 - 2014-04-22 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Electro-Communications 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Nonlinear Acoustics, General, etc 
Paper Information
Registration To US 
Conference Code 2014-04-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Dependence of scatter size on pulse compressed parametric sound echo 
Sub Title (in English)  
Keyword(1) Nonlinear sound propagation  
Keyword(2) Parametric difference frequency sound  
Keyword(3) Chirp signal  
Keyword(4) Pulse compression  
Keyword(5) Scatter  
Keyword(6) Echo  
Keyword(7) Ultrasonic imaging  
Keyword(8)  
1st Author's Name Hideyuki Nomura  
1st Author's Affiliation University of Electro-Communications (UEC)
2nd Author's Name Hideo Adachi  
2nd Author's Affiliation University of Electro-Communications (UEC)
3rd Author's Name Tomoo Kamakura  
3rd Author's Affiliation University of Electro-Communications (UEC)
4th Author's Name Gregory T. Clement  
4th Author's Affiliation University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2014-04-22 14:00:00 
Presentation Time 30 minutes 
Registration for US 
Paper # US2014-3 
Volume (vol) vol.114 
Number (no) no.16 
Page pp.13-17 
#Pages 5 
Date of Issue 2014-04-15 (US) 

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