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| Presentation | 2017-08-31 10:00 Variability characteristics of sound reflection on sea surface with wave -- A result of water tank experiment -- Tomoya Tsukui, Shinichi Sawada (IHI), Shinnosuke Hirata, Hiroyuki Hachiya (Tokyo Inst. of Tech.)  US2017-46 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Various hydro acoustic devices are used in the field of ocean development of resources and observations with AUV and ASV. For example underwater acoustic communication, these devices transmit and receive sound under the sea, so it is important to evaluate characteristics of sound reflection on sea surface. Usually, everyone introduces a completely reflection model on sea surface without waves, but amplitude and phase of reflected wave fluctuates from moment to moment on sea surface with waves. So, we conducted an acoustic experiment in water tank using plungers which make random waves as sea surface. Then, we obtain fundamental data of sound reflection at experiments and evaluate characteristics of reflected sound using acoustic simulation with the FDTD method. As a result, variability characteristics of amplitude are same tendency between water tank test and acoustic simulation. With the increase of wave height, we confirmed a PDF of amplitude of reflected sound which change from a Gaussian distribution to a Rayleigh distribution, namely Rice distribution. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Sea surface / Roughness / Sound Reflection / Water tank test / FDTD method / Rice Distribution / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 190, US2017-46, pp. 1-6, Aug. 2017. | |
| Paper # | US2017-46 | |
| Date of Issue | 2017-08-24 (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 | US2017-46 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2017-08-31 - 2017-08-31 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | US |
| Conference Code | 2017-08-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Variability characteristics of sound reflection on sea surface with wave |
| Sub Title (in English) | A result of water tank experiment |
| Keyword(1) | Sea surface |
| Keyword(2) | Roughness |
| Keyword(3) | Sound Reflection |
| Keyword(4) | Water tank test |
| Keyword(5) | FDTD method |
| Keyword(6) | Rice Distribution |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Tomoya Tsukui |
| 1st Author's Affiliation | IHI Coorporation (IHI) |
| 2nd Author's Name | Shinichi Sawada |
| 2nd Author's Affiliation | IHI Coorporation (IHI) |
| 3rd Author's Name | Shinnosuke Hirata |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Inst. of Tech.) |
| 4th Author's Name | Hiroyuki Hachiya |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Inst. of Tech.) |
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| Speaker | Author-1 |
| Date Time | 2017-08-31 10:00:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2017-46 |
| Volume (vol) | vol.117 |
| Number (no) | no.190 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2017-08-24 (US) |
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