针对红外偏振信息应用于目标探测识别的理论需求, 基于红外辐射基本理论, 详细分析和推导了红外反射、热辐射、红外散射等光波传输过程产生的偏振效应, 并对这三种偏振效应进行了详细的建模与实验验证, 其中利用菲涅耳反射定律对物体表面红外反射的偏振性进行了分析, 并得出确定的反射偏振度解析式; 结合物体表面模型利用菲涅耳折射机制对物体的热辐射进行了计算, 并利用文献中的数据重现了密立根关于金属铂和金属银的偏振性实验, 充分验证了红外辐射偏振性的存在; 分别利用瑞利散射和米氏散射理论对物体表面红外散射的偏振性进行了分析和计算, 计算结果充分体现了散射产生偏振的规律性。上述研究结论为更好地利用红外偏振信息实现目标探测识别提供了充分的理论依据。

Aiming at the theory requirement of the application of infrared polarization information in target detection and identification, the polarization effect produced in the light transmission process of infrared reflectance, thermal radiation, infrared scattering etc. was analyzed and deduced in detail in this paper based on the theory of infrared radiation, and three kinds of polarization effects were modeled and analyzed quantitatively in detail, wherein, the polarization of infrared reflection on object surface was calculated by using Fresnel reflection law, thermal radiation of the object was calculated using Fresnel refraction mechanism combined with the object surface model, and the polarization of infrared scattering on the object surface was calculated by using the Rayleigh and Mie scattering theory respectively. The above conclusion from the study in this paper provides sufficient theoretical foundation for the realization of target detection and recognition by better utilization of infrared polarization information.