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| Presentation | 2009-01-29 16:10 Acoustic imaging in indoor environments using simultaneous transmission of M-sequence signals Hiroshi Matsuo (Chiba Univ.), Junji Okubo (Tokyo Tech.), Tadashi Yamaguchi (Chiba Univ.), Hiroyuki Hachiya (Tokyo Tech.)  US2008-81 EA2008-123 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Acoustic sensing in the air has the potential to acquire information about an object such as its position, shape, material and movement effectively. Nevertheless, it is difficult to identify acoustic signals from small objects clearly because of environmental noises, sound attenuation and scattering of object surface. We have been presented the performance of object detection using the M-sequence signal in an indoor environment. By using M-sequence signal, it was able to improve SN ratio and to measure the reflected waves from small object that can not be detected by using a conventional impulse. In this paper, we present a technique to get an equivalent effect of multiple transmission using simultaneous transmission of M-sequence signals. A cross-correlation between preferred pair M-sequences has small value. A simultaneous transmission of M-sequence signals enables acoustic imaging with high resolution only by one transmission. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Acoustic sensing / M-sequence signal / Preferred pair / Acoustic imaging / PN code / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 410, US2008-81, pp. 49-54, Jan. 2009. | |
| Paper # | US2008-81 | |
| Date of Issue | 2009-01-22 (US, EA) | |
| 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 | US2008-81 EA2008-123 |
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| Conference Information | |
| Committee | EA US |
| Conference Date | 2009-01-29 - 2009-01-30 |
| 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 | 2009-01-EA-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Acoustic imaging in indoor environments using simultaneous transmission of M-sequence signals |
| Sub Title (in English) | |
| Keyword(1) | Acoustic sensing |
| Keyword(2) | M-sequence signal |
| Keyword(3) | Preferred pair |
| Keyword(4) | Acoustic imaging |
| Keyword(5) | PN code |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hiroshi Matsuo |
| 1st Author's Affiliation | Chiba University (Chiba Univ.) |
| 2nd Author's Name | Junji Okubo |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech.) |
| 3rd Author's Name | Tadashi Yamaguchi |
| 3rd Author's Affiliation | Chiba University (Chiba Univ.) |
| 4th Author's Name | Hiroyuki Hachiya |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech.) |
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| Speaker | Author-1 |
| Date Time | 2009-01-29 16:10:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2008-81, EA2008-123 |
| Volume (vol) | vol.108 |
| Number (no) | no.410(US), no.411(EA) |
| Page | pp.49-54(US), pp.41-46(EA) |
| #Pages | 6 |
| Date of Issue | 2009-01-22 (US, EA) |
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