| 基于偏度的低空目标声信号盲抽取算法 |
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| 引用本文： | 张琼,杨俊安,夏建明.基于偏度的低空目标声信号盲抽取算法[J].数据采集与处理,2011,26(1):69-73. |
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| 作者姓名： | 张琼 杨俊安 夏建明 |
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| 作者单位： | 电子工程学院信息系,合肥,230037;安徽省电子制约技术重点实验室,合肥,230037 |
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| 基金项目： | 国家自然科学基金(60872113)资助项目 |
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| 摘 要： | 针对盲源分离信号顺序的不确定性以及基于峭度的盲抽取算法运算量大的问题,本文提出一种基于偏度的低空目标声信号盲抽取算法.该算法利用偏度的非对称性,将其作为信号非高斯性的度量,抽取出的信号可以按偏度绝对值的降序排列.与基于峭度的盲抽取算法相比,该算法大大减小了运算量,同时具有较好的分离效果,且对于噪声具有鲁棒性.声音信号及...
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| 关 键 词： | 盲抽取 盲分离 偏度 |
Novel Blind Source Extraction Algorithm to Low Altitude Acoustic Signals Based on Skewness |
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| Zhang Qiong,Yang Junan,Xia Jianming.Novel Blind Source Extraction Algorithm to Low Altitude Acoustic Signals Based on Skewness[J].Journal of Data Acquisition & Processing,2011,26(1):69-73. |
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| Authors: | Zhang Qiong Yang Junan Xia Jianming |
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| Affiliation: | Zhang Qiong1,2,Yang Junan1,Xia Jianming1,2(1.Department of Information,Electronic Engineering Institute,Hefei,230037,China,2.Key Laboratory of Electronic Restriction,Anhui Province,China) |
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| Abstract: | For the uncertainty of the signal sequence of blind source separation and the large computation of the kurtosis-based blind source extraction algorithm,a blind signal extraction algorithm for low altitude acoustic based on skewness is proposed.An algorithm uses the asymmetric of skewness to evaluate the non-Gaussianity of a signal.The signal can be extracted by the absolute value of the skewness in descending order.Compared with the kurtosis-based blind extraction algorithm,the algorithm reduces the computa... |
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| Keywords: | blind source extraction blind source separation skewness |
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