| 基于时间反转镜的自适应聚焦仿真研究 |
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| 引用本文： | 付永庆,夏云龙.基于时间反转镜的自适应聚焦仿真研究[J].大连海事大学学报(自然科学版),2007,33(4):14-18. |
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| 作者姓名： | 付永庆 夏云龙 |
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| 作者单位： | 哈尔滨工程大学信息与通信工程学院 哈尔滨150001 |
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| 摘 要： | 为在水下信号检测中消除水声信道的影响,实现最佳聚焦,在分析时间反转自适应聚焦原理的基础上,研究了时间反转镜(TRM)的自适应聚焦现象.在典型的水文条件下进行了TRM自适应聚焦的仿真研究.结果表明:在随机媒质中,TRM利用水声信道的相干多途特性获得聚焦增益,聚焦效果明显优于均匀媒质;聚焦信号的峰值比均匀媒质高23%.
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| 关 键 词： | 时间反转镜 自适应聚焦 随机媒质 |
| 文章编号： | 1006-7736（2007）04-0014-05 |
| 收稿时间： | 2007-07-25 |
| 修稿时间： | 2007年7月25日 |
Simulation on self-adaptive focusing based on time reversal mirror |
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| FU Yong-qing,XIA Yun-long.Simulation on self-adaptive focusing based on time reversal mirror[J].Journal of Dalian Maritime University,2007,33(4):14-18. |
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| Authors: | FU Yong-qing XIA Yun-long |
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| Abstract: | The self-adaptive focusing effects of time reversal mirror(TRM) were studied based on time-reversal focusing theory to eliminate the influence of underwater sound channel and realize the optimal focusing in the detection of underwater signal.The simulation on self-adaptive focusing for time reversal was carried out in typical underwater experiment.The simulation results of TRM show that focusing gain can be obtained using the coherence of multi-path channel.Focusing effect with a TRM through random medium is much better than that in homogeneous medium.The peak of the recompressed signal in random medium is 23% higher than that in the homogeneous medium. |
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| Keywords: | time reversal mirror self-adaptive focusing random medium |
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