基于Savizky-Golay多项式的三维荧光光谱的曲面平滑方法  

The Surface Smoothing Methods for Three-Dimensional Fluorescence Spectrometry Based on Savitzky-Golay Polynomial Smoothing

作　　者：杜树新[1] 杜阳锋[1] 武晓莉[1] 

机构地区：[1]浙江大学工业控制技术国家重点实验室,工业控制研究所,浙江杭州310027

出　　处：《光谱学与光谱分析》2011年第2期440-443,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(60974111);国家(863计划)项目(2009AA04Z123)资助

摘　　要：平滑处理是光谱分析中常用的预处理方法。在二维光谱分析中应用广泛的Savizky-Golay多项式曲线平滑方法并不能直接应用于三维荧光光谱的曲面平滑。文章针对三维荧光光谱提出了多项式平滑方法,从而将Savitzky-Golay多项式平滑方法扩展到三维荧光光谱,以解决曲面平滑问题。对基于三维荧光光谱的水体有机污染物浓度检测进行了实验研究,实验结果表明采用三维荧光光谱平滑处理方法可有效提高检测模型的精度。Spectral smoothing is commonly used as effective pretreatment methods in the spectral analysis.However,the conventional Savitzky-Golay polynomial smoothing methods used in two-dimensional spectral analysis can not be applied to three-dimensional spectrometry directly.In the present paper,a polynomial surface smoothing method is proposed,and the two-dimensional Savitzky-Golay polynomial smoothing methods are extended to three-dimensional fluorescence spectra.Experiment for detecting dissolved organ matter in water using three-dimensional florescence spectrometry was carried out,and experimental results show that the smoothing method for the three-dimensional fluorescence spectrum can effectively improve the modeling accuracy.

关 键 词：三维荧光光谱 Savitzky-Golay多项式平滑 有机污染物浓度检测 

分 类 号：O657.3[理学—分析化学]