一种改进的多小波分解重构算法及其应用  

An improved decomposition and reconstruction algorithm of multiwavelet and its application

作　　者：刘志刚[1] 何正友[1] 钱清泉[1] 

机构地区：[1]西南交通大学电气化自动化研究所,四川成都610031

出　　处：《铁道学报》2003年第5期45-49,共5页Journal of the China Railway Society

基　　金：国家自然科学基金资助(59977019);四川省应用基础研究项目资助(02GY029-039)

摘　　要：在论述多小波基本理论及其分解重构算法的基础上,基于多小波分解重构算法的扩展与正交多小波的对称/反对称特性,提出了一种改进的分解重构算法,并以SA4多小波为例,对电力系统高压输电线故障暂态信号进行分解与重构,证明了其有效性。The basic theory of multiwavelets and its decomposition & reconstruction algorithm are introduced and discussed in this paper. Based on the expansion of the decomposition & reconstruction algorithm and the symmetry/asymmetry property of the orthogonal multiwavelet, the improved decomposition & reconstruction algorithm is proposed. SA4 multiwavelets are taken as an example. Transient fauet signals on the high voltage transmission lines in the power system are decomposed and reconstructed, thus proving the effectiveness of the improved algorithm.

关 键 词：信号处理 多小波 分解与重构 算法 

分 类 号：TM711[电气工程—电力系统及自动化] O241.5[理学—计算数学]