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被动迭代时间反转镜研究 被引量:3

Study on passive iterative time reversal mirror
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摘要 抗除多途信道的干扰,优化被动检测性能是声纳信号处理关注的问题之一。通过仿真揭示了多途信道中单水听器时间反转镜的聚焦效应,研究了被动迭代时间反转镜技术,对其多目标定位选择性、多目标选择聚焦性能作了研究。结果表明利用了海洋信道的相干多途特性,被动时间反转镜可实现多个目标的空间匹配滤波;利用迭代算法,被动迭代时间反转镜可在抑制环境噪声干扰的同时,在信道输出总能量强的目标处实现选择性聚焦。 Optimizing detection performance of passive sonar is important in sonar signal processing. The focusing effect of the single time reversal mirror (TRM) in multi-path channels is proved by simulation and the technique of passive iterative TRM is studied. The selective focusing and locating of TRM are studied while multi-targets exist. The results show that the passive TRM can realize the multi-targets' space matched-filtering, and combined with iterative algorithm the passive iterative TRM can be focused on the most reflective target and weaken environment noise.
出处 《声学技术》 CSCD 北大核心 2008年第4期588-592,共5页 Technical Acoustics
基金 国家重点实验室基金(9140C200305080C20) 预研项目(4010501040104)资助
关键词 时间反转 迭代算法 被动检测 time reversal mirror iterative algorithm passive detection
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参考文献7

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共引文献40

同被引文献35

  • 1陈韶华,相敬林,石杰.一种改进的适用于稀疏信道的DFE均衡器[J].西北工业大学学报,2006,24(2):185-189. 被引量:7
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  • 6H Song, W Hodgkiss, W Kuperman, T Akal, M Stevenson. Multiuser Communications Using Passive Time Reversal[J]. Oceanic Engineering, 2007,32:915 - 926.
  • 7H C Song, W S Hodgkiss, P Roux, W A Kuperman, T Akal, M Stevenson. Coherent MIMO time reversal communications in shallow water[ M]. OCEANS '04, 2004, 4:2225 - 2229.
  • 8Ian F Akyildiz, Dario Pompili, Tommaso Melodia. Challenges for efficient communication in underwater acoustic sensor networks [J]. SIGBED Rev. , 2004,1:3 -8.
  • 9Guo Guoqiang, Yang Yixin, Sun Chao. Time Reversal Echo - to - reverberation Enhancement with Reverberation Nulling Constraints Based on Waveguide Invariant [ C ]. OCEANS 2008 MTS/IEEE Kobe Techno - Ocean, 2008. 1 - 5.
  • 10Gong Gaiyun, Pan Xiang, Gong Xianyi. Active time reversal detection under the environment of ocean waveguide [ C ]. ICCT 2008, 2008. 474 -477.

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