| Sound propagation in two-axis underwater channel based on beam-displacement ray-mode theory |
| |
| 作者姓名： | 张林 笪良龙 卢晓亭 |
| |
| 作者单位： | Underwater Acoustics Data Center Navy Submarine Academy，Underwater Acoustics Data Center Navy Submarine Academy，Underwater Acoustics Data Center Navy Submarine Academy，Qingdao 266003 China，Qingdao 266003 China，Qingdao 266003 China |
| |
| 摘 要： | Sound propagation in a deep ocean two-axis underwater channel is often complex and difficult to simulate between surface channel and sound fixing and ranging (SOFAR) channel. The beam-displacement ray-mode (BDRM) theory is a normal mode method for propagation modeling in horizontally stratified shallow water. An improved method for computing the upper boundary reflection coefficient in the BDRM is proposed and applied to calculate the acoustic fields of a two-axis underwater channel. Transmission losses in the two-axis underwater channel are calculated in the new BDRM. The corresponding results are in good agreement with those from the Kraken code, and furthermore the computed speed of the new BDRM excels the other methods.
|
| 关 键 词： | 水下通道 反射系数 声音传播 海洋 |
| 收稿时间： | 27 August 2005 |
| 修稿时间： | 2005-08-272006-05-23 |
Sound propagation in two-axis underwater channel based on beam-displacement ray-mode theory |
| |
| Zhang?Lin,Da?Lianglong,Lu?Xiaoting.Sound propagation in two-axis underwater channel based on beam-displacement ray-mode theory[J].Chinese Journal of Oceanology and Limnology,2007,25(3):300-303. |
| |
| Authors: | Zhang Lin Da Lianglong Lu Xiaoting |
| |
| Institution: | Underwater Acoustics Data Center, Navy Submarine Academy, Qingdao 266003, China |
| |
| Abstract: | Sound propagation in a deep ocean two-axis underwater channel is often complex and difficult to simulate between surface channel and sound fixing and ranging (SOFAR) channel. The beam-displacement ray-mode (BDRM) theory is a normal mode method for propagation modeling in horizontally stratified shallow water. An improved method for computing the upper boundary reflection coefficient in the BDRM is proposed and applied to calculate the acoustic fields of a two-axis underwater channel. Transmission losses in the two-axis underwater channel are calculated in the new BDRM. The corresponding results are in good agreement with those from the Kraken code, and furthermore the computed speed of the new BDRM excels the other methods. |
| |
| Keywords: | two-axis underwater channel BDRM theory reflection coefficient phase-shift correction |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
