| Presentation | 2004/8/13 A fundamental research on long horizontal communication by active time reversal Takuya SHIMURA, Yoshitaka WATANABE, Hiroshi OCHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have researched the focusing property of time reversal waves through tank experiments and simulations. In this paper, the study on long horizontal acoustic communication using time reversal, particularly the communication from array to a point, is described. The simulations of the horizontal communication are carried out using PE method to calculate acoustic propagation and the advantageous effect of time reversal on the communication accuracy or the effects of ambient noise, sound velocity profiles and the depth of the focus are investigated. It is revealed that time reversal makes it possible to assure the communication channel even in the environment where it is impossible by the conventional method and that time reversal communication is not disrupted by ambient noise, sound velocity profile and the depth of the focus. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | time reversal waves / phase conjugate waves / acoustic communication / adaptive filter / multi-path |
| Paper # | US2004-33 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2004/8/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A fundamental research on long horizontal communication by active time reversal |
| Sub Title (in English) | |
| Keyword(1) | time reversal waves |
| Keyword(2) | phase conjugate waves |
| Keyword(3) | acoustic communication |
| Keyword(4) | adaptive filter |
| Keyword(5) | multi-path |
| 1st Author's Name | Takuya SHIMURA |
| 1st Author's Affiliation | Marine Technology Research and Development Program, Marine Technology Center, Japan Agency for Marine-Earth Science and Technology(JAMSTEC)() |
| 2nd Author's Name | Yoshitaka WATANABE |
| 2nd Author's Affiliation | Marine Technology Research and Development Program, Marine Technology Center, Japan Agency for Marine-Earth Science and Technology(JAMSTEC) |
| 3rd Author's Name | Hiroshi OCHI |
| 3rd Author's Affiliation | Marine Technology Research and Development Program, Marine Technology Center, Japan Agency for Marine-Earth Science and Technology(JAMSTEC) |
| Date | 2004/8/13 |
| Paper # | US2004-33 |
| Volume (vol) | vol.104 |
| Number (no) | 254 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |