| 激光诱导击穿光谱数据特征自动提取方法研究 |
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| 作者姓名： | Liu LT Liu JG Zhao NJ Lu CP Chen D Shi H Wang CL Zhang YJ Liu WQ |
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| 作者单位： | 中国科学院安徽光学精密机械研究所,中国科学院环境光学与技术重点实验室,安徽合肥230031 |
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| 基金项目： | 国家自然科学基金项目(60908018); 中国科学院知识创新工程重大项目(kzcx-1yw-06-01); 安徽省科技计划项目(083H3b1581); 所长基金项目(073H371141)资助 |
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| 摘 要： | 根据激光诱导击穿光谱(LIBS)展宽主要为非线性Lorentz函数模型,利用Levenberg-Marquardt(L-M)算法对该理论模型中的待定参数进行优化估值,扣除了光谱信号中的连续背景,校正和还原了峰位和峰强,并对拟合数据点自动提取方法进行了分析;以MatrixVB与VB混合编程相结合,实现了基于L-M算法的L...
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| 关 键 词： | 激光诱导击穿光谱 特征提取 Levenberg-Marquardt算法 非线性拟合 |
Study on the automatic extraction method of spectral data features in laser induced breakdown spectroscopy |
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| Liu LT,Liu JG,Zhao NJ,Lu CP,Chen D,Shi H,Wang CL,Zhang YJ,Liu WQ.Study on the automatic extraction method of spectral data features in laser induced breakdown spectroscopy[J].Spectroscopy and Spectral Analysis,2011,31(12):3285-3288. |
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| Authors: | Liu Li-tuo Liu Jian-guo Zhao Nan-jing Lu Cui-ping Chen Dong Shi Huan Wang Chun-long Zhang Yu-jun Liu Wen-qing |
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| Institution: | LIU Li-tuo,LIU Jian-guo,ZHAO Nan-jing,LU Cui-ping,CHEN Dong,SHI Huan,WANG Chun-long,ZHANG Yu-jun,LIU Wen-qing Key Laboratory of Environment Optics&Technology,Institute of Anhui Optics Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China |
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| Abstract: | According to that the spectral line broadening of laser induced breakdown spectroscopy(LIBS)was lorentz nonlinearfunction model,using Levenberg-Marquardt(L-M)agorithm to optimally estimate the undetermined parameter in the function,the continuum background radiation and peak position and peak intensity were corrected,and the method of data points automaticextraction for fitting was analysed.Automatic fitting and feature parameter extraction for spectral data of LIBS based on L-M al-gorithm that was hybrid p... |
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| Keywords: | Laser induced breakdown spectroscopy Fe atures extraction Algorithm of Levenberg-Marquardt Nonlinear fitting |
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