激光技术2024，Vol.48Issue(5)：671-676,6.DOI:10.7510/jgjs.issn.1001-3806.2024.05.009
改进平滑迭代拟合原子发射光谱基线校正算法
Improved iterative smoothing for correcting baseline in atomic emission spectra fitting algorithm
张文利 1石秀东 1叶反修 2陈昊1
作者信息
- 1. 江南大学 机械工程学院,无锡 214000,中国
- 2. 无锡市金义博仪器科技有限公司,无锡 214000,中国
- 折叠
摘要
Abstract
To address the issue of baseline interference in the subsequent processing of spectral signals,a spectral signal region baseline fitting algorithm was proposed in this study.A certain number of smaller data points were extracted from the original spectrum,and an initial baseline was obtained through linear interpolation.In cases where there were overlapping peaks in the spectrum,the selected smaller data points may contain non-baseline outliers.Smoothing iterations were introduced,and a method for baseline determination based on the rate of change of the slope was proposed.This algorithm was compared with different baseline fitting methods on simulated and actual spectra.The results show that,in the process of fitting simulated baselines,a relative standard deviation of 8.25%is obtained with this algorithm,which is the lowest compared to that obtained with other methods.The correlation of the calibration curve based on this algorithm is the highest at 99.85%,and the smallest root mean square error in prediction is 0.5912.The baseline fitting algorithm proposed in this study demonstrates high accuracy and stability in various types of atomic emission spectra and can effectively estimate the continuous background of atomic emission spectra.关键词
光谱学/原子发射光谱/基线校正/激光诱导击穿光谱Key words
spectroscopy/atomic emission spectroscopy/baseline correction/laser-induced breakdown spectroscopy分类
化学引用本文复制引用
张文利,石秀东,叶反修,陈昊..改进平滑迭代拟合原子发射光谱基线校正算法[J].激光技术,2024,48(5):671-676,6.
