| Presentation | 2016-08-25 Statistical analysis of transient noise observed at Hashirimizu Port in Yokosuka Keiichi Shikata, Kazuyoshi Mori, Hanako Ogasawara, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In coastal water, ambient noise is dominated by snapping shrimp, and it is necessary to know its characteristics to design and operate of sonar. First, we analyzed amplitude statistics of ambient noise observed in Hashirimizu Port. The result shows that the amplitude histogram has a non-Gaussian distribution, and it can be approximated by Symmetric-α-stable (SαS) distribution. If snapping sounds occurred by following a homogeneous Poisson process, the inter-snap interval follows the exponential distribution. Second, we compared the inter-snap interval histogram (IIH) with the exponential distribution. And it is showed that the observed snapping sounds follow a homogeneous Poisson process. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Snapping Shrimp / Underwater Ambient Noise / Gaussian Distribution / SαS Distribution / Homogeneous Poisson Process / Exponential Distribution |
| Paper # | US2016-41 |
| Date of Issue | 2016-08-18 (US) |
| Conference Information | |
| Committee | US |
|---|---|
| Conference Date | 2016/8/25(1days) |
| 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) |
| Chair | Nobuyuki Endo(Kanagawa Univ.) |
| Vice Chair | Yoichi Itoh(Nihon Univ.) / Minoru Kurosawa(Tokyo Inst. of Tech.) |
| Secretary | Yoichi Itoh(Univ. of Electro-Comm.) / Minoru Kurosawa(Univ. of Toyama) |
| Assistant | Takeshi Morita(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Statistical analysis of transient noise observed at Hashirimizu Port in Yokosuka |
| Sub Title (in English) | |
| Keyword(1) | Snapping Shrimp |
| Keyword(2) | Underwater Ambient Noise |
| Keyword(3) | Gaussian Distribution |
| Keyword(4) | SαS Distribution |
| Keyword(5) | Homogeneous Poisson Process |
| Keyword(6) | Exponential Distribution |
| 1st Author's Name | Keiichi Shikata |
| 1st Author's Affiliation | National Defense Academy(NDA) |
| 2nd Author's Name | Kazuyoshi Mori |
| 2nd Author's Affiliation | National Defense Academy(NDA) |
| 3rd Author's Name | Hanako Ogasawara |
| 3rd Author's Affiliation | National Defense Academy(NDA) |
| Date | 2016-08-25 |
| Paper # | US2016-41 |
| Volume (vol) | vol.116 |
| Number (no) | US-190 |
| Page | pp.pp.19-22(US), |
| #Pages | 4 |
| Date of Issue | 2016-08-18 (US) |