PCI混响消除算法的理论和实现方法  

Theory and implementation method based on PCI reverberation elimination algorithm

作　　者：刘贯领[1] 凌国民[1] 严琪[1] 

机构地区：[1]杭州应用声学研究所,杭州310012

出　　处：《船舶工程》2008年第2期54-57,19,共5页Ship Engineering

摘　　要：就工作在混响限制区域的主动声纳而言,混响成为限制声纳性能发挥的主要因素之一.如何有效地抑制混响或对混响进行弱化处理,对于提高主动声纳的目标检测能力具有十分重要的理论和实际意义.采用基于信号子空间理论,即主元求逆算法(PCI)的混响估计方法,实现了混响限制区域混响和信号的分离,并提出了一个混响子空间定阶方法.实际海试数据处理结果表明,该方法可以有效的剔除接收信号中的混响,有利于改善系统在混响限制条件下的检测能力.For the active sonar operating in the reverberation-limited environment, reverberation is one of main factors restricting the performance exertion. How to effectively suppress or weaken the reverberation has academic and practical meanings to enhance the detection capabilities of the active sonar. The signal subspace theory named Principal Component Inverse （PCI） of the reverberation estimation method realizes the separation of the reverberation and signal in the reverberation suppression area, and a reverberation subspace method is proposed. The practical sea trial data analysis shows that the method can effectively delete the reverberation of receiving signals and is beneficial to improve the detection performance under the reverberation limited environment.

关 键 词：信号处理 主动声纳 混响抑制 检测 子空间理论 主元求逆 

分 类 号：TN911.7[电子电信—通信与信息系统]