高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (10): 1522.

• 论文 • 上一篇    下一篇

阶跃伏安法信号的样条小波分析

邹小勇, 莫金垣   

  1. 中山大学化学系, 广州, 510275
  • 收稿日期:1995-10-18 出版日期:1996-10-24 发布日期:1996-10-24
  • 通讯作者: 莫金垣
  • 作者简介:邹小勇,男,31岁,博士研究生.
  • 基金资助:

    国家自然科学基金;广东省自然科学基金

Spline Wavelets Analysis of Step Voltammetry Signals

ZOU Xiao-Yong, MO Jin-Yuan   

  1. Department of Chemistry, Zhongshan University, Guangzhou, 510275
  • Received:1995-10-18 Online:1996-10-24 Published:1996-10-24

PDF (PC)

被引次数

13

摘要： 采用样条小波基处理低信噪比的阶跃伏安法离散数据。仿真实验和化学实验结果表明,样条小波分析含强白噪声的信号时,能保真地提取出有用信号,信噪比(S/N)降低至0.1～0.2.这种方法具有不需设置目标函数、窗口函数、初值估计等优点,同时运算简单、节省储存空间。因此,样条小波运用于信号分析较现行方法优越,并具有广阔的应用前景。

关键词: 阶跃伏安法, 样条小波分析, 样条小波基

Abstract: For the first time,this paper presents spline wavelets application to step voltammetry signals,The method has advantages as follows:taking short time to deal with all data,having no necessary to find the relations with variables in any other systems,handling the target functions and initial conditions directly from sample data and obtaining few data necessarily.Some reasonable noises are added to the theoretical data,Signal-to-noise ratio varies from 0.1 to 100.The result is satisfactory and exciting even if the S/Nratio decreases to 0.15.Experimental data from a low concentration of Ti(Ⅳ)-H2C2O4 and W (Ⅳ)+Mo(Ⅳ)-HAPP-KClO3 system are utilized to demonstrate the application of wavelet analysis.The agreement between the theoretical and experimental results is excellent.

Key words: Step voltammetry, Spline wavelets analysis, Spline wavelets basis

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