Multi-resolution analysis for noise reduction and weak peak detection in X-ray fluorescence spectra

ZOU Yongxiang1; 2 WU Jianping1 1

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Multi-resolution analysis for noise reduction and weak peak detection in X-ray fluorescence spectra

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- Multi-resolution analysis for noise reduction and weak peak detection in X-ray fluorescence spectra
- NUCLEAR TECHNIQUES Issue 4, (2008)
- 作者机构：
  
  1. 成都理工大学核技术与自动化工程学院
  2. 成都理工大学核技术与自动化工程学院,成都,650009
  3. 宜宾学院
  4. ,宜宾,644007
- 作者简介：
- 基金信息：
  
  四川省应用基础项目(2006J13-018)资助
- DOI：
  CLC： O657.34
- Published：01 April 2008
- 稿件说明：
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[1]邹永祥,吴建平.基于多分辨率分析的X荧光能谱的除噪与弱峰检测[J].核技术,2008(04):260-264.

ZOU Yongxiang1, 2 WU Jianping1 1. Multi-resolution analysis for noise reduction and weak peak detection in X-ray fluorescence spectra[J]. Nuclear techniques, 2008, (4): 260-264.
[1]邹永祥,吴建平.基于多分辨率分析的X荧光能谱的除噪与弱峰检测[J].核技术,2008(04):260-264. DOI：

ZOU Yongxiang1, 2 WU Jianping1 1. Multi-resolution analysis for noise reduction and weak peak detection in X-ray fluorescence spectra[J]. Nuclear techniques, 2008, (4): 260-264. DOI：

摘要

在对X荧光谱噪声的分析基础上

阐述了多分辨率分析的基本思想

并将之应用于X射线能谱定量分析中的噪声的消除

取得了良好的效果。利用噪声和信号小波变换的性质随尺度的加大而显著不同的特点

运用小波多分辨率分析进行信号噪声的消除

可提高弱峰的检测能力

实验结果表明

该降噪的方法不仅计算速度快

而且和其它的方法相比

对低含量元素形成的弱峰的定量分析结果也更加理想。

Abstract

Based on analysis of X-ray spectra noise

basic theories of multi-resolution analysis are introduced

and applied to denoise for X-ray fluorescence(XRF)spectra.The maxima of the noise and signal wavelet transform in-crease with the signal amplitude

hence significant difference

and the multi-resolution analysis is better than other treatments in noise reduction

as was conf.Experiments show that the method computes rapidly

with desirable results in determination of low content elements.

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