SO_(2)紫外相机的实时自定标方法研究  

Real-Time Self-Calibration Method for SO_(2) Ultraviolet Cameras

作　　者：张子豪 郭建军 张会亮 熊远辉 李娟[3] 武魁军 何微微 Zhang Zihao;Guo Jianjun;Zhang Huiliang;Xiong Yuanhui;Li Juan;Wu Kuijun;He Weiwei(School of Physics and Electronic Information,Yantai University,Yantai 264005,Shandong,China;Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,Hubei,China;Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710119,Shaanxi,China)

机构地区：[1]烟台大学物理与电子信息学院,山东烟台264005 [2]中国科学院精密测量科学与技术创新研究院,湖北武汉430071 [3]中国科学院西安光学精密机械研究所,陕西西安710119

出　　处：《光学学报》2023年第12期247-255,共9页Acta Optica Sinica

基　　金：国家自然科学基金(41975039,61705253);山东省自然科学基金(ZR2021QD088);山东省高等学校“青创科技支持计划”(2021KJ008);国家重点研发计划“大气污染成因与控制技术研究”重点专项(2017YFC0211900);大学生创新创业训练计划项目(202111066006)。

摘　　要：基于紫外SO_(2)相机成像探测技术的工作机理,结合紫外辐射传输理论提出了SO_(2)相机的自定标理论。简要介绍了目前常用的3种定标(标准泡定标、DOAS定标和光谱定标)方法,并通过分析传统定标方法的局限性,阐述了自定标方法相对于传统定标方法的优势。实验结果表明,自定标法拟合的定标曲线斜率较传统方法所得定标曲线斜率相差约1.4%,平均相对误差约6%,满足测量精度要求。自定标方法具有准确、简便、实用的技术优点,在移动污染源的紫外成像遥感监测中具有良好的应用前景。Objective The booming shipping industry leads to ever increasing emissions of ship exhaust pollutants.Sulfur dioxide(SO_(2)),the main component of pollutants in ship exhaust,causes the most serious air pollution.Effective monitoring of its emissions is the key to controlling ship exhaust pollution.In recent years,the imaging detection technology of SO_(2) ultraviolet(UV)cameras has been developed rapidly due to its strong practicability and high reliability and has been applied in ship exhaust monitoring.However,calibration is still the main factor that limits its measurement accuracy and application.There are three calibration methods(calibration cells,DOAS,and spectral calibration)for SO_(2) UV cameras.The calibration cell method is simple and most employed early in calibration.However,the frequent switching of calibration cells exerts adverse effects on the realtime detection of SO_(2) UV cameras.Although DOAS is suitable for longdistance monitoring,it has the disadvantages of small field of view(FOV)and poor matching.The accuracy of spectral calibration is significantly improved compared with the first two methods,but the complexity and cost of the camera system are rising with the adoption of an outlay UV spectrometer.With a focus on the selfcalibration method,this paper carries out research based on the working mechanism of the SO_(2) UV camera imaging detection technology,the UV radiation transfer theory,and the simulation of the entire system.Comparison between the advantages of the selfcalibration method and the three traditional calibrations proves that the selfcalibration method not only has accurate,simple,and practical technical advantages but also shows its great application prospect in the UV imaging remote sensing monitoring of mobile pollution sources.Methods The signal channel(filter A)is greatly affected by the changing ozone optical path length,but the reference channel(filter B)is relatively less affected.This difference is the source of the basic principle of selfcalibration.The theoretical

关 键 词：遥感 SO_(2)相机 紫外光谱 自定标 成像遥感 

分 类 号：O433[机械工程—光学工程]