| 多途信道短慕线时间反转聚焦研究(英文) |
| |
| 引用本文： | 李壮,乔钢,孙宗鑫,赵海洋,郭冉.多途信道短慕线时间反转聚焦研究(英文)[J].船舶与海洋工程学报,2012,11(2):251-257. |
| |
| 作者姓名： | 李壮 乔钢 孙宗鑫 赵海洋 郭冉 |
| |
| 作者单位： | College of Underwater Acoustic Engineering,Harbin Engineering University |
| |
| 基金项目： | Supported by the National Defense Basic Foundation of China B2420710007 |
| |
| 摘 要： | The existence of a multi-path channel under the water greatly decreases the accuracy of the short baseline positioning system.In this paper,the application of a time reversal mirror to the short baseline positioning system was investigated.The time reversal mirror technique allowed the acoustic signal to better focus in an unknown environment,which effectively reduced the expansion of multi-path acoustic signals as well as improved the signal focusing.The signal-to-noise ratio(SNR) of the time reversal operator greatly increased and could be obtained by ensonifying the water.The technique was less affected by the environment and therefore more applicable to a complex shallow water environment.Numerical simulations and pool experiments were used to demonstrate the efficiency of this technique.
|
| 关 键 词： | short baseline positioning focusing gain time reversal mirror multi-path channel ocean acoustic channel acoustic signal processing |
Short baseline positioning with an improved time reversal technique in a multi-path channel |
| |
| Zhuang Li,Gang Qiao,Zongxin Sun,Haiyang Zhao,Ran Guo.Short baseline positioning with an improved time reversal technique in a multi-path channel[J].Journal of Marine Science and Application,2012,11(2):251-257. |
| |
| Authors: | Zhuang Li Gang Qiao Zongxin Sun Haiyang Zhao Ran Guo |
| |
| Institution: | College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001,China |
| |
| Abstract: | The existence of a multi-path channel under the water greatly decreases the accuracy of the short baseline positioning system.In this paper,the application of a time reversal mirror to the short baseline positioning system was investigated.The time reversal mirror technique allowed the acoustic signal to better focus in an unknown environment,which effectively reduced the expansion of multi-path acoustic signals as well as improved the signal focusing.The signal-to-noise ratio(SNR) of the time reversal operator greatly increased and could be obtained by ensonifying the water.The technique was less affected by the environment and therefore more applicable to a complex shallow water environment.Numerical simulations and pool experiments were used to demonstrate the efficiency of this technique. |
| |
| Keywords: | short baseline positioning focusing gain time reversal mirror multi-path channel ocean acoustic channel acoustic signal processing |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
