用基于Coifman尺度函数的多分辨时域分析计算电磁散射

Using the MRTD Based on Coifman Scaling Functions to Solve the Problem of Scattering

本文利用Coifman尺度函数具有消失矩和紧支集的特点 ,提出了一种新的多分辨时域分析方法 ,研究了它的数值色散特性 ,并与通常的FDTD方法进行了比较 .通过算例 ,表明该方法比通常的FDTD方法需要网格数量少。

A new method of multiresolution time-domain analysis is proposed, which is based on Coifman compactly supported scaling functions with some number of vanishing moments. The highly linear dispersional properties of the method are investigated and compared with conventional FDTD method. The problem of scattering from two-dimensional conducting cylinders is analyzed in order to demonstrate the advantages of this method over conventional FDTD scheme with respect to memory requirements and execution time.