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
收藏
页码：1019 / 1024
页数：6
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