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运用改进型菲涅尔方程和基尔霍夫近似方法分别研究室内不同粗糙面的太赫兹波反射和散射。根据改进型菲涅尔反射理论,得到了在水平和垂直两种极化状态下,不同入射角、不同粗糙面及不同频率的反射系数,分析了以上参数变化对反射系数的影响和物理意义。同时,基于基尔霍夫近似理论,得到了在水平和垂直两种极化状态下,不同入射角和方位角、不同散射角、不同粗糙面的散射系数,获得了散射系数随以上参数变化而产生的数值结果,并分析了仿真结果的物理意义。
The improved Fresnel equation and Kirchhoff approximation are used to study the terahertz wave reflection and scattering in different rough surfaces indoors. According to the modified Fresnel reflection theory, the reflection coefficients at different angles of incidence, different roughness and different frequencies under both horizontal and vertical polarizations are obtained. The influence of the above parameters on the reflection coefficient and its physical meaning are analyzed. At the same time, based on Kirchhoff’s approximation theory, the scattering coefficients at different angles of incidence and azimuths, different scattering angles and different rough surfaces were obtained under both horizontal and vertical polarization states, and the scattering coefficients were obtained with the above parameters The numerical results produced and the physical meaning of the simulation results are analyzed.