摘要
从样条函数定义入手,给出了构造样条小波的具体方法。为了解决小波分析对奇异信号的奇异点定位困难的问题,重点介绍了基于余弦基展开式的零点对称的二进样条小波、零点反对称的二进样条小波构造方法,并提出了具体的实现算法及计算过程。通过与正交样条小波的比较,对称样条小波能对阶跃信号和脉冲信号奇异点进行更好的定位,实验结论也进一步验证了该样条小波对分析奇异信号具有较大优势。
Based on cardinal spline function,the contribution gives the construction ways. In order to overcome the matter about locating singularity position,the paper introduces the ways of symmetry dyadic spline wavelets on zero,anti-symmetry dyadic spline wavelets on zero,at the same time,puts forward to the transform arithmetic. Analyzing the real fault step signals arid pulse signals by means of the constructed spline wavelets, the paper proves that the location of symmetry（anti -symmetry） dyadic spline wavelet is better than orthorhombie wavelet,experiment testify the result is correct.
出处
《现代电子技术》
2009年第1期36-40,共5页
Modern Electronics Technique
关键词
样条函数
构造方法
二进样条小波
信号定位
奇异性
spline function
construction method
dyadic spline wavelets
signal location
singularity
