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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。
Based on the theory of infrared polarization applied to target detection and recognition, based on the basic theory of infrared radiation, the polarization effects produced by the infrared transmission, thermal radiation and infrared scattering are analyzed and deduced in detail. The three kinds of polarization effects are analyzed Detailed modeling and experimental verification are carried out, in which the polarization of the infrared reflection on the surface of the object is analyzed by Fresnel reflection law, and the analytical formula of the reflection polarization degree is obtained. By combining the surface model of the object with the Fresnel refraction mechanism, And the data of the literature are used to reproduce Millikan’s polarization experiments on metallic platinum and metallic silver, which fully verify the existence of the polarization of infrared radiation. By using Rayleigh scattering and Mie scattering theory respectively The polarization of infrared scattering on the surface of the object is analyzed and calculated. The calculation results fully reflect the regularity of the polarization generated by scattering. The conclusions of the above study provide a sufficient theoretical basis for better use of infrared polarization information to achieve target detection identification.