一种用于双各向异性材料参数反演的新模型

A Novel Model for Parameter Reconstruction of Biaxial Anisotropic Medium

针对双各向异性材料参数的反演,在多频点测量、多厚度测量、多入射角测量模型的基础上,本文首次提出了一种用于双各向异性材料参数反演的新模型,该模型是由同材料前后两层相对旋转一定角度的双层组成。利用一阶状态矢量法,推导得到了该模型反射传输的计算公式,并分析了双层同材料测量模型的传输特性。与单层平板模型传输特性进行比较表明:有的传输参数在单层时对媒质参数敏感,而有的在双层时对媒质参数敏感。本文的工作为双各向异性吸波材料参数的反演打下了基础。

A novel model for parameter reconstruction of biaxial anisotropic medium is presented in this paper firstly. The model consists of two plate biaxial anisotropic medium layers with one layer rotating some angle to the other. Using firstorder state-vector method, the transmission and reflection formula are derived for this model. Some calculation results are obtained which are compared with the single-layer model. The results show that the double-layers model has more choices for measurement and some parameters are more sensitive to transmission and reflection in the new model than in the single layer model. These provided a new way to reconstruct the biaxial anisotropic medium parameters.