基于独立分量分析的煤矿机械缺陷超声信号处理技术分析-analysis of ultrasonic signal processing technology for coal mine machinery defects based on independent component analysis.docxVIP
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基于独立分量分析的煤矿机械缺陷超声信号处理技术分析-analysis of ultrasonic signal processing technology for coal mine machinery defects based on independent component analysis
目录目录1绪论......................................................................................................................................11.1论文研究背景及意义..................................................................................................11.1.1研究背景............................................................................................................11.1.2研究意义............................................................................................................21.2超声信号的研究现状..................................................................................................21.3独立分量分析的技术及其应用..................................................................................31.4论文的主要内容与结构安排......................................................................................42独立分量分析的理论基础....................................................................................................62.1独立分量分析定义......................................................................................................6ICA的数学模型6ICA的不确定性62.2独立分量分析理论的相关信息论知识......................................................................72.2.1熵........................................................................................................................72.2.2Kullbace-Leibler散度82.2.3互信息................................................................................................................82.2.4负熵....................................................................................................................92.3ICA的独立性判据92.3.1非高斯性极大化判据......................................................................................102.3.2极小化互信息判据...........................................................................................112.3.3信息极大化判据...............................................................................................112.3.4极大似然判据..................................................................................................122.4本章小结....................
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