| 序列信号连续子波变换的MATLAB方法实现 |
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| 引用本文： | 赵元英,袁晓,魏永豪.序列信号连续子波变换的MATLAB方法实现[J].四川大学学报(自然科学版),2006,43(2):325-329. |
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| 作者姓名： | 赵元英 袁晓 魏永豪 |
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| 作者单位： | 1. 电子科技集团第十三研究所,石家庄,050051
2. 四川大学电子信息学院,成都,610064 |
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| 摘 要： | 目的在于考察序列信号的连续子波变换(CWT)在MATLAB中的程序实现.介绍子波变换的基本概念和MATLAB中的算法原理,发现在cwt.m的算法中,由于差分运算的存在使子波滤波器系数含有误差,提出新算法及其程序实现.最后利用两种算法对FSK信号进行连续子波变换,证明提出的新算法优于原算法.
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| 关 键 词： | 子波滤波器 尺度 morlet子波 FSK信号 |
| 文章编号： | 0490-6756（2006）02-0325-05 |
| 收稿时间： | 3/3/2005 12:00:00 AM |
| 修稿时间： | 2005-03-03 |
Realization of Continuous Wavelet Transform of Sequences by MATLAB |
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| ZHAO Yuan-ying,YUAN Xiao,WEI Yong-hao.Realization of Continuous Wavelet Transform of Sequences by MATLAB[J].Journal of Sichuan University (Natural Science Edition),2006,43(2):325-329. |
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| Authors: | ZHAO Yuan-ying YUAN Xiao WEI Yong-hao |
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| Institution: | No.13 Institute of CETC; Shijiazhuang 050051,School of Electronic and Information; Sichuan Univ,School of Electronic and Information; Sichuan Univ |
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| Abstract: | The program realization of continuous wavelet transform(CWT) by MATLAB is analyzed.Firstly,the basic concept of wavelet transform and the arithmetic of CWT in MATLAB is introduced.In this arithmetic,the error caused by differential coefficient is found,and it is a great disadvantage for analyzing signals.Therefor a new arithmetic of CWT is showed.Finally,take FSK signal as an example to make continuous wavelet transform using two arithmetics and analyze the result in theory.It shows the new arithmetic is be... |
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| Keywords: | wavelet filter scale parameter morlet wavelet FSK signal |
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