基于EEMD-MRA方法的LIBS信号处理研究  

Research on LIBS Signal Processing Based on EEMD-MRA Method

作　　者：李明[1] 张帅[1] 吴天宇 王楗 关丛荣 陈吉文 LI Ming;ZHANG Shuai;WU Tian-yu;WANG Jian;GUAN Cong-rong;CHEN Ji-wen(School of Electrical and Control Engineering,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学电气与控制工程学院,北京100144

出　　处：《光谱学与光谱分析》2022年第12期3836-3841,共6页Spectroscopy and Spectral Analysis

基　　金：国家重点研发计划项目(重大科学仪器设备专项2017YFF0108900)资助。

摘　　要：LIBS技术优点众多,但由于光谱噪声干扰和基体效应等因素,影响了分析的准确度[1];EEMD方法能清晰的将LIBS信号中的不同特征成分自适应的分解开来。MRA方法能够补偿元素信号之间的互干扰,可进一步提高LIBS信号的准确性。通过自行搭建的测试系统获得了标准样品的原始信号,使用EEMD-MRA方法进行处理后,元素浓度曲线的决定系数R^(2)得到了极大的提高,大大的提高数据的准确性,为LIBS信号的处理提供了一种全新的方式。LIBS technology has many advantages,but the analysis accuracy is affected by factors such as spectral noise interference and matrix effect[1];the EEMD method can decompose the different characteristic components of LIBS signal adaptively.The MRA method can compensate for the mutual interference between element signals and improve LIBS data accuracy.In this paper,the original signal of the standard sample is obtained through the self-built test system.After being processed by the EEMD-MRA method,the correlation coefficient R^(2) of the element concentration curve has been greatly improved,greatly improved the accuracy of data,and provided a new way for processing LIBS signal.

关 键 词：LIBS技术 EEMD方法 MRA方法 信号分析与处理 

分 类 号：O657.37[理学—分析化学]