SF6气体分解组分红外光谱信号的去噪与背景扣除

被引：5

作者：

胡耀垓 ^{[1
,2
]}

张晓星 ^{[2
]}

王震 ^{[2
]}

赵正予 ^{[1
]}

机构：

[1] 武汉大学电子信息学院

[2] 重庆大学输配电装备及系统安全与新技术国家重点实验室

来源：

高电压技术 | 2011年 / 37卷 / 05期

关键词：

SF6气体分解组分; 红外光谱; 小波去噪; 背景扣除; 曲线背景; 斜坡背景; 小波多分辨分析;

D O I：

10.13336/j.1003-6520.hve.2011.05.003

中图分类号：

TN911.4 [噪声与干扰];

学科分类号：

摘要：

SF6气体分解组分谱图中的噪声和背景是影响红外光谱定量分析的关键。为此,根据SF6气体分解组分谱图背景信号处于低频带的特点,提出了一种基于小波多分辨分析的SF6气体分解组分红外光谱信号背景扣除算法,首先对原始谱图进行小波去噪,然后利用小波多分辨分析进行背景预扣除,并基于高斯函数一阶导数的特性进行峰形修正,最后得到扣除背景后的红外光谱信号。针对含曲线及斜坡背景的SF6放电分解组分SO2F2模拟红外谱图和SO2真实红外谱图的处理结果显示,该方法能够有效解决红外光谱分析SF6分解组分时的噪声和背景干扰问题,有利于提高定量分析的精度。

引用

页码：1166 / 1171

页数：6

共 20 条

[11]

数值泛函与小波理论[M]. 西安电子科技大学出版社 , 冯象初等编著, 2003

[12]

New background correction approach based on polynomial regressions for on-line liquid chromatography–Fourier transform infrared spectrometry[J] . Julia Kuligowski,Guillermo Quintás,Salvador Garrigues,Miguel de la Guardia.Journal of Chromatography A . 2009 (15)

[13]

New background correction method for liquid chromatography with diode array detection, infrared spectroscopic detection and Raman spectroscopic detection[J] . Hans F.M. Boelens,Reyer J. Dijkstra,Paul H.C. Eilers,Fiona Fitzpatrick,Johan A. Westerhuis.Journal of Chromatography A . 2004 (1)

[14] A Background and noise elimination method for quantitative calibration of near infrared spectra [J].

Chen, D ;

Shao, XG ;

Hu, B ;

Su, QD .

ANALYTICA CHIMICA ACTA, 2004, 511 (01) :37-45

[15] Application of wavelet transform to background correction in inductively coupled plasma atomic emission spectrometry [J].

Ma, XG ;

Zhang, ZX .

ANALYTICA CHIMICA ACTA, 2003, 485 (02) :233-239

[16] Signal background estimation and baseline correction algorithms for accurate DNA sequencing [J].

Andrade, L ;

Manolakos, ES .

JOURNAL OF VLSI SIGNAL PROCESSING SYSTEMS FOR SIGNAL IMAGE AND VIDEO TECHNOLOGY, 2003, 35 (03) :229-243

[17] Quadratic polynomial technique for absorption correction in X-ray fluorescence spectrometry using continuous scattered background [J].

Bao, SX ;

Liu, JS ;

Rong, LM ;

Wang, ZH ;

Guo, J .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2000, 55 (04) :379-382

[18]

Baseline Correction of Spectra in Fourier Transform Infrared: Interactive Drawing with Bézier Curves[J] . Alain Koch,Jean-Victor Weber.Applied Spectroscopy . 1998 (7)

[19]

An evaluation of orthogonal signal correction applied to calibration transfer of near infrared spectra[J] . Chemometrics and Intelligent Laboratory Systems . 1998 (1)

[20]

An introduction to wavelet transforms for chemometricians: A time-frequency approach[J] . Chemometrics and Intelligent Laboratory Systems . 1997 (2)

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