摘要
正交紧支小波基函数的形状是非对称的，其正交镜像滤波器OMF不具备相移不变的特性。采用由紧支小波的自相关函数扩张平移构成的多精度表示，进行瞬时信号的检测则有移不变特性。以两个实例体现了这两种方法的不同应用。
The shape of the basic functions of orthogonal compactly supported wavelets is non-symmetric. Its orthogonal mirror filter OMF has no property of phase-shift invariance. By means of the multiresolution representation of signals using dilations and translations of the auto-correlation functions of compactly supported wavelets, the results in detection of transient signals have property of phase-shift invariance. Two examples are presented for two different applications.
出处
《上海工程技术大学学报》
CAS
1998年第3期10-17,共8页
Journal of Shanghai University of Engineering Science
