基于涂层材料散射光偏振度的复折射率反演

Inversion of complex refractive index based on polarization degree of scattering light of coating material

基于微面元P-G模型,结合涂层材料的表面特征,对半经验遮蔽函数进行了改进,推导了一种基于散射光偏振度反演复折射率的方法,开展了中绿涂层材料偏振散射实验,讨论了相关参量对偏振度和反演误差的影响。研究表明,入射角对偏振度和反演误差的影响较大,其次为折射率实部、虚部和探测角;反演结果能客观地反映涂层材料的复折射率,反演误差小于2%,可作为一种涂层材料复折射率反演的新方法,在目标识别领域有着重要的应用价值。

Based on the micro-face P-G model and the surface feature of the coating material,the semi-empirical barrier function is improved. Inversion of the refraction index by the polarization degree of light polarization and the polarization scattering experiment of the green coating material is constructed,and the influence of the relevant parameters on the polarization degree and the inversion error is analyzed. The results show that the incident angle has the greatest influence on the polarization degree and the inversion error,followed by the real part of the refractive index,the imaginary part of the refractive index and the detection angle. The inversion result can objectively reflect the refractive index of the coating material,the inversion error is less than2%,Which can be used as a new method for inversion of complex refractive index of a coating material,and also has important application value in the field of target recognition.