| Presentation | 2009-01-29 Acoustic imaging in indoor environments using a simultaneous transmission of M-sequence signals Hiroshi MATSUO, Junji OKUBO, Tadashi YAMAGUCHI, Hiroyuki HACHIYA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Acoustic sensing / M-sequence signal / Preferred pair / Acoustic imaging / PN code |
| Paper # | US2008-81,EA2008-123 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2009/1/22(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Acoustic imaging in indoor environments using a 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 |
| 1st Author's Name | Hiroshi MATSUO |
| 1st Author's Affiliation | Graduate School of Advanced Integration Science, Chiba University() |
| 2nd Author's Name | Junji OKUBO |
| 2nd Author's Affiliation | Faculty of Engineering, Tokyo Institute of Technology |
| 3rd Author's Name | Tadashi YAMAGUCHI |
| 3rd Author's Affiliation | Research Center for Frontier Medical Engineering, Chiba University |
| 4th Author's Name | Hiroyuki HACHIYA |
| 4th Author's Affiliation | Graduate School of Science and Engineering, Tokyo Institute of Technology |
| Date | 2009-01-29 |
| Paper # | US2008-81,EA2008-123 |
| Volume (vol) | vol.108 |
| Number (no) | 411 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |