文章摘要
生雪莉,周伟,鲍习中,惠俊英.被动迭代时间反转镜研究[J].声学技术,2008,(4):588~592
被动迭代时间反转镜研究
Study on passive iterative time reversal mirror
投稿时间:2007-06-05  修订日期:2007-08-08
DOI:
中文关键词: 时间反转  迭代算法  被动检测
英文关键词: time reversal mirror  iterative algorithm  passive detection
基金项目:国家重点实验室基金(9140C200305080C20);预研项目(4010501040104)资助
作者单位E-mail
生雪莉 哈尔滨工程大学水声工程学院, 哈尔滨, 150001 hrb_lier@yahoo.com.cn 
周伟 哈尔滨工程大学水声工程学院, 哈尔滨, 150001  
鲍习中 哈尔滨工程大学水声工程学院, 哈尔滨, 150001  
惠俊英 哈尔滨工程大学水声工程学院, 哈尔滨, 150001  
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中文摘要:
      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。
英文摘要:
      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.
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