Paper Abstract and Keywords |
Presentation |
2015-08-24 16:10
Influence of Noise Spatial Distribution on Ambient Noise Imaging with Acoustic Lens
-- Preliminary Data Analysis for the 2nd Sea Trial in November of 2014 -- Kazuyoshi Mori, Hanako Ogasawara (NDA), Takenobu Tsuchiya, Nobuyuki Endoh (Kanagawa Univ.) US2015-44 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Recently, we built a 2nd prototype ambient noise imaging (ANI) system using the acoustic lens having a 2-D receiver array with 127 elements corresponding to a field of view 15 degrees horizontally by 9 degrees vertically, and it is possible to record 127 output signals of the 2-D array continuously. In this study, we investigated the influence of the spatial noise distribution on the target image obtained by ANI. Here, the noise sources in front of the target are called ‘front light’, and those in rear of the target are called ‘back light’. In November 10-14, 2014, targets arranged in the field of view were imaged, and the positions of noise sources were also measured in the 2nd sea trial at Uchiura Bay. In the front light, the received intensities of the target directions were greater than those of other directions due to the dominant target scatterings. Reversely, in the back light, the received intensities of the target directions were lower than those of other directions due to the dominant direct noises such as ‘silhouette’. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Ambient Noise Imaging / Acoustic Lens / Noise Spatial Distribution / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 186, US2015-44, pp. 37-41, Aug. 2015. |
Paper # |
US2015-44 |
Date of Issue |
2015-08-17 (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) |
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US2015-44 |
Conference Information |
Committee |
US |
Conference Date |
2015-08-24 - 2015-08-24 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tokyo Institute of Technology, Ookayama Campus |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Underwater Acoustics, General(Co-Organization:The Marine Acoustics Society of Japan) |
Paper Information |
Registration To |
US |
Conference Code |
2015-08-US |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Influence of Noise Spatial Distribution on Ambient Noise Imaging with Acoustic Lens |
Sub Title (in English) |
Preliminary Data Analysis for the 2nd Sea Trial in November of 2014 |
Keyword(1) |
Ambient Noise Imaging |
Keyword(2) |
Acoustic Lens |
Keyword(3) |
Noise Spatial Distribution |
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1st Author's Name |
Kazuyoshi Mori |
1st Author's Affiliation |
National Defense Academy (NDA) |
2nd Author's Name |
Hanako Ogasawara |
2nd Author's Affiliation |
National Defense Academy (NDA) |
3rd Author's Name |
Takenobu Tsuchiya |
3rd Author's Affiliation |
Kanagawa University (Kanagawa Univ.) |
4th Author's Name |
Nobuyuki Endoh |
4th Author's Affiliation |
Kanagawa University (Kanagawa Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-08-24 16:10:00 |
Presentation Time |
25 minutes |
Registration for |
US |
Paper # |
US2015-44 |
Volume (vol) |
vol.115 |
Number (no) |
no.186 |
Page |
pp.37-41 |
#Pages |
5 |
Date of Issue |
2015-08-17 (US) |
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