| 基于柯西分布的红外偏振辐射优化模型 |
| 投稿时间：2024-12-30 修订日期：2025-01-06 点此下载全文 |
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| 中文摘要:为了更好地表征物体表面辐射偏振特性，本文以P-G模型为基础，针对物体表面微面元分布情况，将柯西分布引入模型，建立一种基于柯西分布的二分量偏振双向反射分布函数（PBRDF）模型。基于红外偏振辐射传输特性，采用黑体辐射定律推导出红外辐射线偏振度模型，并设计红外偏振成像实验对此模型进行检验。数值分析引入柯西分布后的红外线偏振度模型相较采用高斯分布的精度的影响，结果表明采用柯西分布表征的微面元模型对于描述物体表面红外线偏振度具有更好的适用性。上述结果为BRDF模型精度的进一步优化提供理论支撑与技术支持。 |
| 中文关键词:红外偏振 柯西分布 偏振双向反射分布函数 线偏振度 |
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| Infrared polarization radiation optimization model based on Cauchy distribution |
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| Abstract:In order to better characterize the radiative polarization characteristics of the surface of objects, based on the P-G model, the Cauchy distribution is introduced into the model according to the distribution of microfacets on the surface of the object, and a two-component polarization bidirectional reflection distribution function (PBRDF) model based on Cauchy distribution is established. Based on the characteristics of infrared polarization radiation transmission, the black-body radiation law is used to derive the infrared radiation polarization degree model, and the infrared polarization imaging experiment is designed to test the model. Numerical analysis of the influence of the infrared polarization model with Cauchy distribution compared with the accuracy of Gaussian distribution, the results show that the micro-facet model characterized by Cauchy distribution has better applicability to describe the infrared polarization of the object surface. The above results provide theoretical support and technical support for the further optimization of the accuracy of the BRDF model. |
| keywords:Infrared polarization Kersey distribution Polarization Bidirectional Reflection Distribution Function Linear polarization |
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