时域有限面积法解手征介质涂层导体柱的电磁散射

Time-Domain Finite Surface Method for Solving Scattering Problems of Arbitrary Cross Section PEC Cylinders Coated with Chiral Medium

本文将时域有限面积法推广应用于研究任意截面复合手征介质涂层导体柱的电磁散射问题 ,建立了数值求解复合手征介质问题的时域基本方程 .本文使用正交贴体计算网格 ,并选用适合正交曲线坐标系的二阶精度吸收边界条件 ,提高了计算精度 .对典型的复合手征介质涂层导体柱的RCS计算表明 。

A Time-Domain Finite-Surface Method is generalized to scattering problems of arbitrary cross section perfectly electrically conducting (PEC) cylinder coated with composite chiral medium. Time domain basic equations are built for solving electromagnetic problem in composite chiral medium. The body-fitted orthogonal grids and the second order absorbing boundary conditions, which are suitable for orthogonal coordinate, are utilized. More accurate results are found. Numerical results are obtained for RCS problems of typical PEC cylinders coated with chiral and composite chiral medium. Comparisons with exact series solution show generally good agreement.