Abstract：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 R2 of the element concentration curve has been greatly improved, greatly improved the accuracy of data, and provided a new way for processing LIBS signal.
Key words：LIBS;EEMD method; MRA method; Signal analysis and processing
李 明，张 帅，吴天宇，王 楗，关丛荣，陈吉文. 基于EEMD-MRA方法的LIBS信号处理研究[J]. 光谱学与光谱分析, 2022, 42(12): 3836-3841.
LI Ming, ZHANG Shuai, WU Tian-yu, WANG Jian, GUAN Cong-rong, CHEN Ji-wen. Research on LIBS Signal Processing Based on EEMD-MRA Method. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(12): 3836-3841.
[1] ZHAO Wen-ya, MIN Hong, LIU Shu, et al(赵文雅, 闵 红, 刘 曙，等). Spectroscopy and Spectral Analysi(光谱学与光谱分析), 2021, 41(7)：1998.
[2] ZHANG Tian-long, WU Shan, TANG Hong-sheng, et al(张天龙，吴 珊，汤宏胜，等). Chinese Journal of Analytical Chemistry(分析化学), 2015, (6)：939.
[3] Huang N E, Long S R, Wu M C, et al. Proc. R. Soc. Lond., 1998, 454: 903.
[4] Wu Zhaohua, Huang N E. Technical Report, 2005, 193：51.
[5] LI Ming, ZHAO Ying, CUI Fei-peng, et al(李 明，赵 迎，崔飞鹏，等). Metallurgucal Analysis(冶金分析), 2019, (5)：57.
[6] WANG Zhe, FENG Jie, LI Zheng, et al(王 哲，冯 杰，李 政，等). Journal of Tsinghua University·Science and Technology(清华大学学报·自然科学版), 2010, (8)：1263.
