| 基于时间反转镜的宽带匹配场处理 |
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| 引用本文： | 马敬广,李峰,单忠伟,惠俊英,生雪莉. 基于时间反转镜的宽带匹配场处理[J]. 声学技术, 2007, 26(4): 606-610 |
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| 作者姓名： | 马敬广 李峰 单忠伟 惠俊英 生雪莉 |
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| 作者单位： | 1. 哈尔滨工程大学水声工程学院,哈尔滨,150001
2. 杭州应用声学研究所声纳技术国防科技重点实验室,杭州,310012 |
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| 摘 要： | 声场的互易性和线性波动方程的时反不变性能用时间反转来代替频域的相位共轭。因此,时间反转技术可以应用于宽带的匹配场处理中。时间反转匹配场处理时,仍然需要知道海洋环境的先验知识,例如声场的声速分布,海洋边界条件等等。文章对时间反转应用于匹配场处理进行了仿真并分析海上试验数据。仿真和试验数据分析结果表明:该套时间的反转处理方法可以实现匹配场定位,定位精度较高,而且多元阵信号处理的增益也十分明显。
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| 关 键 词： | 时间反转镜 匹配场 |
| 文章编号： | 1000-3630（2007）-04-0606-05 |
| 收稿时间： | 2006-11-29 |
| 修稿时间： | 2007-03-10 |
Broad band matched field processing technique basing on time-reversal |
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| MA Jing-guang,LI Feng,SHAN Zhong-wei,HUI Jun-ying and SHENG Xue-li. Broad band matched field processing technique basing on time-reversal[J]. Technical Acoustics, 2007, 26(4): 606-610 |
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| Authors: | MA Jing-guang LI Feng SHAN Zhong-wei HUI Jun-ying SHENG Xue-li |
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| Affiliation: | 1. College of Underwater Acoustic Engineering, Harbin Engineering University,Harbin, 150001, China; 2. Hangzhou Applied Acoustics Research Institute, Hangzhou, 310012, China |
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| Abstract: | The phase conjugate in the frequency domain is usually replaced with time-reversal for time reversal invariance of linear wave equation and interchange of acoustic field.Therefore the time reversal technique can be applied to the matched field processing.As MFP,matched field processing with time reversal(TR-MFP) is influenced by oceanic environmental information such as the sound speed profile and boundary conditions.In this paper,Matched field processing with time reversal technique is studied and analyzed with simulation and experimental data.Computer simulation and sea-test data show that the time-reversal technology is effective in target localization with good precision and clear array gain. |
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| Keywords: | time-reversal mirror matched field processing |
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