实数-复数小波变换法扣除X射线荧光光谱本底  

A Background Subtraction Approach Based on Real and Complex Wavelet Transform for X-ray Fluorescence Spectra

作　　者：汪雪元 何剑锋[1,2,3] 吴光明 WANG Xue-yuan;HE Jian-feng;WU Guang-ming(Jiangxi Engineering laboratory on Radioactive Geoscience and Big Data Technology,East China University of Technology,Nanchang 330013,China;Jiangxi Engineering Research Center of Nuclear Geoscience Data Science and System,East China University of Technology,Nanchang 330013,China;Software College,East China University of Technology,Nanchang 330013,China)

机构地区：[1]江西省放射性地学大数据技术工程实验室,南昌330013 [2]江西省核地学数据科学与系统工程技术研究中心,南昌330013 [3]东华理工大学软件学院,南昌330013

出　　处：《核电子学与探测技术》2019年第6期692-696,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(11865002);江西省自然科学基金(20161BAB201035);江西省教育厅科学技术研究项目(GJJ170433);江西省放射性地学大数据技术工程实验室开放基金(JELRGBDT201703)资助。

摘　　要：提出了一种联合利用实数小波和复数小波变换对光谱进行逐段本底扣除的方法。在新方法中,利用实数小波变换获得重叠峰的本底,而由复数小波变换获得本底峰位置的本底。应用新方法对仿真谱和实验光谱进行本底扣除并对扣除效果进行比较和评价。实验结果表明:新方法在对含重叠峰的X射线荧光光谱进行本底扣除时,得到的本底比实数小波和复数小波变换得到的本底更为精确。A piecewise background subtraction approach based on real and complex wavelet transform was presented.In the proposed approach,backgrounds of overlapping peaks are obtained with the real wavelet transform,and the peak of background are obtained with the complex wavelet transform.The new approach was applied to subtract the backgrounds of one simulated spectrum and one experimental spectrum,and the results have been compared and evaluated.Experimental results show that the backgrounds obtained from X-ray fluorescence spectral with overlapping peaks by using the proposed approach are more accurate than real and complex wavelet transform.

关 键 词：X射线荧光光谱 本底扣除 实数小波变换 复数小波变换 

分 类 号：TL817[核科学技术—核技术及应用] TP391.9[自动化与计算机技术—计算机应用技术]