| 一种适用于微弱信号盲提取的白化方法 |
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| 引用本文： | 张和发,李立萍,杨小牛,李万春.一种适用于微弱信号盲提取的白化方法[J].电子学报,2011,39(6):1297-1301. |
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| 作者姓名： | 张和发 李立萍 杨小牛 李万春 |
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| 作者单位： | 电子科技大学电子工程学院;通信系统信息控制技术国家级重点实验室; |
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| 基金项目： | 中央高校基本科研业务费专项资金(No.ZYGX2009J016) |
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| 摘 要： | 独立分量分析(ICA)算法是解决盲信号分离(BSS)问题的最有效方法之一.ICA中,对观测信号预白化处理的作用至关重要.通常采用主分量分析(PCA)来进行预白化处理.实际中,在利用广播、电视等作为照射源的被动雷达系统中,观测信号通常被强噪声和干扰严重污染,这很大程度上降低了BSS方法的性能.然而,传统的BSS方法中没有...
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| 关 键 词： | 独立分量分析 盲信号分离 预白化 被动雷达 微弱信号提取 |
| 收稿时间： | 2010-04-14 |
An Efficient Whitening Method for Weak Signal Extraction |
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| ZHANG He-fa,LI Li-ping,YANG Xiao-niu,LI Wan-chun.An Efficient Whitening Method for Weak Signal Extraction[J].Acta Electronica Sinica,2011,39(6):1297-1301. |
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| Authors: | ZHANG He-fa LI Li-ping YANG Xiao-niu LI Wan-chun |
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| Affiliation: | ZHANG He-fa1,2,LI Li-ping1,YANG Xiao-niu2,LI Wan-chun1(1.School of Electronic Engineering,University of Electronics Science and Technology of China,Chengdu,Sichuan 610054,China,2.National Key Laboratory of Information Control Technology for Communication System,Jiaxing,Zhejiang 314033,China) |
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| Abstract: | Independent component analysis(ICA) is one of the most important methods for blind source separation(BSS),in which the pre-whitening procedure of the observed signals plays an important role.Usually,principle component analysis(PCA) is employed for this preprocessing task.In practice,the observed signals of a passive radar system are usually corrupted by strong noise and outliers,which greatly reduces the performance of BSS methods.However,this problem is rarely taken into account in the whitening step of t... |
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| Keywords: | independent component analysis(ICA) blind source separation(BSS) pre-whitening passive radar system weak signal extraction |
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