【摘要】 为了研究典型目标材料表面的可见光偏振反射特性，本文针对传统“V”型表面结构缺陷，引入改进Blinn型阴影遮蔽函数，综合考虑镜面反射、漫反射和体散射的影响，建立了典型目标材料表面偏振六参量双向反射分布函数模型。对不同材料（聚丙烯塑料板、99氧化铝陶瓷板、铁板、绿漆铝板）目标样板进行可见光600 nm波段的偏振特性测试实验，并采用遗传算法进行参数反演。实验与仿真结果表明：与传统“V”型遮蔽模型相比，在入射角为50°，相对方位角为180°，0°～60°观测角对目标材料表面偏振特性的影响中，聚丙烯塑料板模型精度提升最大，RMSE百分比提升了70.61%；在入射角为50°，观测角为50°，DoLP随90°～270°相对方位角变化的过程中，与另两种参考模型相比，本模型精度至少提升了24.73%，线偏振度最小均方根误差值仅为1.29%。对于本文使用材料而言，偏振特性取决于其复折射率的值，当入射角确定，观测角为0°～60°，相对方位角在0°～360°内时，n/k的比值越大，线偏振度峰值越大。在可见光波段，波长对线偏振度的影响不大。更多还原

【Abstract】 Focusing on the visible polarization reflection characteristics of typical target materials surfaces,the polarization bidirectional reflection distribution function model based on the improved Blinn masking function was established considering the effects of specular reflection, diffuse reflection and volume scattering, which maked up for the defect of traditional "V" masking function. The physical parameters of the target materials were inverted by genetic algorithm, and the visible light polarization characteristics of four target materials, namely polypropylene, 99 alumina ceramic, iron and green painted aluminum, were simulated.Experimental tests validate the model’s accuracy. Results indicate that at an incidence angle of 50°, relative azimuth angles of 90°-270°, and detection angles of 0°-60°, the improved model reduces the root mean square error(RMSE) by 70.61% to 24.73%, with a minimum RMSE of 0.0129. Significant polarization is observed at relative azimuth angles of 120°-240°. The larger the ratio of the real part to the imaginary part of the complex refractive index of the four materials, the greater the peak value of the degree of polarization. In the visible light band, the wavelength has little effect on the degree of polarization. These findings provide theoretical data supporting the understanding of polarization characteristics in typical target materials.更多还原