强激光与粒子束2024，Vol.36Issue(12)：129-135,7.DOI:10.11884/HPLPB202436.240333
短波红外波段上辐射定标方法与整层大气透过率的测量研究
Research on radiometric calibration method and measurement of whole layer atmospheric transmittance in short wave infrared band
王书 1连文涛 2孙振 3胡涛1
作者信息
- 1. 信息工程大学数据与目标工程学院,郑州 450001
- 2. 中国科学院安徽光学精密机械研究所大气光学重点实验室,合肥 230031||中国科技大学,合肥 230031||安徽省先进激光技术实验室,合肥 230037||中国科技大学环境科学与光电技术学院,合肥 230026
- 3. 中国科学院安徽光学精密机械研究所大气光学重点实验室,合肥 230031||中国科技大学,合肥 230031||安徽省先进激光技术实验室,合肥 230037
- 折叠
摘要
Abstract
This article employs Fourier transform infrared spectroscopy to investigate radiometric calibration methods and the measurement of continuous atmospheric transmittance across the shortwave infrared band.The presence of multiple strong absorption bands within the shortwave infrared spectrum(0.9-2.2 μm)leads to significant errors in the commonly used Langley method,and even the improved Langley method struggles to yield accurate results for the calibration of these strong absorption bands.To fulfill the high-precision measurement demands for atmospheric transmittance across the entire shortwave infrared band,this paper introduces an enhanced method for calculating atmospheric transmittance.Initially,the Langley calibration technique is utilized to determine the instrument calibration value and response function K in the non-absorption band.Subsequently,the instrument response function in the absorption band is derived by interpolating the wavelength based on the instrument response function calibrated in the non-absorption band.Ultimately,the instrument calibration value is established by correlating it with the solar irradiance at the atmosphere's top,thereby obtaining the atmospheric transmittance across the entire shortwave infrared band.Compared to results calculated by the medium-resolution atmospheric radiative transfer model software CART,the atmospheric transmittance values obtained using this method within the 0.9-2.2 μm band exhibit an average error of less than 2.5%.关键词
大气透过率/傅里叶红外光谱仪/短波红外/定标法Key words
atmospheric transmittance/Fourier infrared spectrometer/short-wave infrared/calibration method分类
天文与地球科学引用本文复制引用
王书,连文涛,孙振,胡涛..短波红外波段上辐射定标方法与整层大气透过率的测量研究[J].强激光与粒子束,2024,36(12):129-135,7.
