大气与环境光学学报2025，Vol.20Issue(4)：423-435,13.DOI:10.3969/j.issn.1673-6141.2025.04.001
混浊大气介质调制传递函数参数化解析模型
Parametric analytical model of modulation transfer function in turbid atmosphere
摘要
Abstract
Modulation transfer function(MTF)is an important indicator to evaluate the effect of turbid atmosphere on the imaging quality of objects.Based on the equivalence principle,this paper studies the quantitative relationship between MTF and key atmospheric optical parameters by using the discrete coordinate numerical solution method of radiative transfer and the linear fitting method,and establish the parametric analytical MTF model in turbid atmosphere.The results have revealed that in the range of optical thickness 0.1-1.0,single scattering albedo 0.1-1.0,and asymmetry factor 0.05-0.95:1)As for the factors affecting the critical frequency,optical thickness is the largest,followed by scattering albedo,and asymmetry factor is the smallest.2)In termes of factors affecting MTF,in the low spatial frequency range,the optical thickness is the largest,followed by the single scattering albedo,and the asymmetry factor is the smallest;while in the high spatial frequency range,the single scattering albedo is the largest,followed by the optical thickness,and the asymmetry factor is the smallest.3)The overall average relative error of the established model is less than 8%,and for many practical application scenarios(asymmetric factor≥0.7,single scattering albedo≥0.55),the average relative error of the model is less than 5%.关键词
大气光学/混浊介质中的成像/光学传递函数/调制传递函数/辐射传输Key words
atmospheric optics/imaging through turbid media/optical transfer functions/modulation transfer function/radiative transfer分类
信息技术与安全科学引用本文复制引用
郭梦星,武鹏飞,樊子钊,饶瑞中..混浊大气介质调制传递函数参数化解析模型[J].大气与环境光学学报,2025,20(4):423-435,13.基金项目
国家重点研发计划青年科学家项目(2022YFF1301900),中国科学院青年创新促进会(2022450) （2022YFF1301900）
