文章摘要
姜卫东,张宏滔,陆佶人.噪声环境下水声信号瞬时盲源分离方法研究[J].声学技术,2006,(3):182~186
噪声环境下水声信号瞬时盲源分离方法研究
Instantaneous blind source separation of underwater acoustics signals in a noisy background
投稿时间:2005-05-09  修订日期:2005-07-30
DOI:
中文关键词: 盲源分离  子带分解  水声信号  噪声  瞬时混合
英文关键词: blind signal separation  subband decomposition  underwater acoustics signal  noise  instantaneous mixture
基金项目:国家重大基础研究项目(JC200202030200004)
作者单位
姜卫东 东南大学无线电工程系, 南京, 210096
海军工程大学电子工程学院, 武汉, 430033 
张宏滔 东南大学无线电工程系, 南京, 210096 
陆佶人 东南大学无线电工程系, 南京, 210096 
摘要点击次数: 684
全文下载次数: 766
中文摘要:
      噪声环境下大多数盲源分离算法性能大大降低。提出了一种适用于噪声环境的基于子带分解的瞬时盲源分离算法。通过修正白化矩阵和选取合理子带降低盲源分离过程中由噪声产生的不利影响。仿真实验表明,采用基于子带分解的瞬时盲源分离算法能够较好地实现噪声环境下水声混合信号的分离;进一步研究表明,该算法在噪声环境下表现出良好的稳健性。
英文摘要:
      Most algorithms for blind signal separation(BSS) have poor performance in a noisy back-ground.An instantaneous blind signal separation method based on subband decomposition is presented to deal with noisy BSS.Using a modified whitening matrix and selecting an appropriate subband,draw-backs due to background noise can be alleviated.Simulation experiments show that mixed underwater acoustic signals in noisy background can well be separated.In addition,the method is robust in the back-ground noise of different intensities.
查看全文   查看/发表评论  下载PDF阅读器
关闭
function PdfOpen(url){ var win="toolbar=no,location=no,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes"; window.open(url,"",win); } function openWin(url,w,h){ var win="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=" + w + ",height=" + h; controlWindow=window.open(url,"",win); } &et=E229CBAFB4897A08D07036D64AFEDDA89884A8EAFFE6AF6658E836D91ABCCAC249C891A481D2744EECF522BFD714455D730BFAA1617B73E52F971543A10437A1868BC4224E3E11113116797538D95B9D6320F74203B56056F9240434D2433A9B&pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=DDCFCD5ACE1B1E5A6D46213553C850CA&yid=37904DC365DD7266&aid=&vid=&iid=38B194292C032A66&sid=B1F98368A47B8888&eid=50BBDFAC8381694B&fileno=20060302&flag=1&is_more=0">