Spline wavelet multi-resolution analysis for high-noise digital signal processing in ultraviolet-visible spectrophotometry

被引：26

作者：

Lu, XQ

Mo, JY

机构：

来源：

ANALYST | 1996年 / 121卷 / 08期

关键词：

spectrophotometry; wavelet multi-resolution analysis; noise reduction; chemometrics;

D O I：

10.1039/an9962101019

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The application of B-spline wavelet multi-resolution analysis (MRA) in UV spectrophotometry is presented, with a modified approach to signal processing. The results indicate that if the optimum B-spline wavelet and truncation frequency are selected, the absolute values of the peak relative errors are less than 2% when the signal-to-noise ratio is not less than 0.5, which means that useful signals can be separated from high-frequency noise. Most often third-order B-spline wavelet MRA is the most effective, In this respect, significant differences are observed for the different B-spline wavelets, The processed results of experiment data are also satisfactory.

引用

页码：1019 / 1024

页数：6