考虑到涂层材料体积散射效应的改进型红外偏振模型

IF 3.1 3区 物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION Infrared Physics & Technology Pub Date : 2024-10-28 DOI:10.1016/j.infrared.2024.105613
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引用次数: 0

摘要

传统的红外偏振模型忽略了涂层材料内部对红外光的吸收和散射,以及红外辐射在涂层表面的定向漫反射效应,这对描述涂层材料的红外偏振特性有一定的局限性。基于微面理论提出了一种改进的红外偏振双向反射分布函数(pBRDF)模型,该模型综合了库贝尔卡-蒙克理论中的体积散射分量、多重反射分量和镜面反射分量。该模型更符合实际涂层材料的红外偏振特性。推导出了红外辐射线性偏振度(DoLP)的表达式。通过红外偏振成像系统获取银色和棕色涂层在不同测量角度下的红外偏振数据,并使用最小二乘法反演法反演模型参数。涂层样品的模拟和测量结果表明,改进后的红外 pBRDF 模型模拟的 DoLP 值与测量值非常吻合。红外线 DoLP 值不随方位角变化,主要受探测天顶角的影响,这在材料分类、偏振遥感和红外场景建模方面具有很大的潜力。
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An improved infrared polarization model considering the volume scattering effect for coating materials
The conventional infrared polarization models ignore the absorption and scattering of infrared light within the coating materials, as well as directional diffuse reflection effect of infrared radiation on the coating surface, which have the limitation for the description of infrared polarization characteristic of coating materials. An improved infrared polarized bidirectional reflectance distribution function (pBRDF) model is proposed based on the microfacet theory, which integrates a volume scattering component developed from the Kubelka-Munk theory, a multiple reflection component and a specular reflection component. This model is more consistent with the infrared polarization characteristics within the actual coating materials. The expression of degree of linear polarization (DoLP) of the infrared radiation is derived. The infrared polarization data of the silver and brown coatings at different measuring angles are acquired by the infrared polarization imaging system, and the model parameters are inverted using the least squares inverse performance method. The simulated and measured results for our coating samples show that the DoLP values simulated by the improved infrared pBRDF model are found in a good agreement with the measurements. The infrared DoLP does not change with the azimuth angle, and mainly influenced by the detection zenith angle, which has a great potential for material classification, polarization remote sensing and infrared scene modeling.
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来源期刊
CiteScore
5.70
自引率
12.10%
发文量
400
审稿时长
67 days
期刊介绍: The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.
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