基于时域有限差分法的广义传输矩阵的研究

The Time Domain GTM based on FDTD

文章研究了基于时域有限差分法的时域广义传输矩阵方法,时域广义传输矩阵在包含散射体的惠更斯等效面上计算和提取,通过时域积分方程和时域有限差分法的混合应用计算得出。本文同样给出了一个在等效面上RWG基函数和FDTD网格上的变换算法。基于时域有限差分法的时域广义传输矩阵方法比基于时域步进法(MOT)和积分方程的广义传输矩阵方法更加稳定。

The Time Domain Generalized Transition Matrix（TD-GTM） based on the integral equations and the finite difference time domain（FDTD） is investigated in this paper. The TD-GTM is established on the Huygens surfaces enclosing the scatterer. It＇s obtained by the impulse responses computed by combining the integral equation methods and FDTD. This paper also presents a transition between the RWG meshes and the FDTD grids and is proved to be a simple and useful process. The TD-GTM allows us to analyse the object module efficiently. It＇s a new implementation and is more stable compared to the original TD-GTM based on MOT and integral equations.