激光技术2024，Vol.48Issue(5)：657-664,8.DOI:10.7510/jgjs.issn.1001-3806.2024.05.007
可见光光谱辐射计波长标定技术研究
Research on wavelength calibration technology for visible spectral radiometer
郭萌 1吴玲玲 1陈靖 1李谱林1
作者信息
- 1. 西安工业大学 光电工程学院,西安 710021,中国
- 折叠
摘要
Abstract
In order to solve the problems of peak shift,weak feature spectrum misjudgment,and artificial spectral line recognition in the wavelength calibration process of visible light spectroradiometers,the adaptive threshold method and the differential method were used to detect and recognize the feature spectrum.Meanwhile,the relationship between wavelength and pixel was determined using the method of least squares and Lagrange interpolation.Theoretical analysis and experimental verification were carried out and the optimum wavelength calibration equation was obtained.The results show that the feature spectrum is detected and recognized sequentially based on the intensity of the spectral lines.The optimal equation was obtained by the Lagrange interpolation method based on 404.6565 nm,435.8335 nm,546.0750 nm,and 579.0670 nm,with a residual standarddeviationofonly 3.2747×10-13nm,the wavelength calibration error distribution is within the range of±0.2 nm.Therefore,this method improves the efficiency of wavelength calibration.It also avoids noise misjudgment and spectral line recognition error and provides reference for wavelength calibration of other spectral instruments.关键词
光谱学/波长标定/自适应阈值谱线检测/特征峰识别Key words
spectroscopy/wavelength calibration/adaptive threshold spectral line detection/characteristic peak recogni-tion分类
机械工程引用本文复制引用
郭萌,吴玲玲,陈靖,李谱林..可见光光谱辐射计波长标定技术研究[J].激光技术,2024,48(5):657-664,8.
