基于各向异性Gaussian改进模型的卫星材料BRDF计算

BRDF calculation of satellite's material based on modified anisotropic Gaussian model

对目标表面双向反射分布函数(BRDF)进行研究,在各向异性Gaussian模型的基础上引入波长因子,提出了改进的BRDF各向异性Gaussian计算模型。运用该模型对卫星太阳能板及包裹多层隔热材料进行了BRDF计算,结果表明该模型参数物理意义明确、简洁高效,能够有效地计算物体表面材料BRDF数值。

Object＇s surface Bidirectional Reflectance Distribution Function（BRDF） was studied, the wavelength factor was introduced on the basis of anisotropic Gaussian model, the modified Anisotropic Gaussian calculation model of BRDF with was put forward. The BRDF of satellite＇s solar panel and muhilayer insulation was calculated by using this model. The numerical results indicate that the modified model has univocal parameters and high efficiency, which can calculate object＇s surface BRDF effectively.