基于小波变换的时域介电谱分析及其应用  

Analysis and application of time domain dielectric spectroscopy based on wavelet transform

作　　者：任磊[1] 陈祥光[1] 刘春涛[1] 

机构地区：[1]北京理工大学化工与环境学院,北京100081

出　　处：《物理学报》2009年第3期2035-2041,共7页Acta Physica Sinica

基　　金：国际合作项目(批准号:BIT-UL20070541002)资助的课题~~

摘　　要：应用小波变换改进时域介电谱的分析法扩宽其应用范围.实验结果表明,通过分析油水混合物的弛豫过程,基于小波变换的时域介电谱分析不但可得反映物性的整体频谱信息,还能得出反映各组成成分不同时域和频域信息.因此,该方法可应用于分析复杂多相混合物.At present,the time domain dielectric spectroscopy is mainly used to analyze thin liquids or materials composed of molecular orderly substances. The various relaxation processes need to be unrelated or be superposed linearly. But it will be clearly limited when the method is applied to the complex heterogeneous mixture analysis. In order to widen its scope of application,the analysis method is improved in this paper by using the wavelet transform. Through the analysis of the oil-water mixture,the experimental results show that the time domain dielectric spectroscopy based on wavelet transform can not only offer the whole spectral information but exhibit the time domain and frequency domain information of various components. Therefore,the analysis method of time domain dielectric spectroscopy based on wavelet transform can be used to analyze complex heterogeneous mixtures.

关 键 词：时域介电谱 小波变换 油水混合物 

分 类 号：O411[理学—理论物理] O487[理学—物理]