Abstract

为了降低Yee氏蛙跳式网格划分的台阶误差,该文对3维曲面导体目标进行精确电磁建模,将时域多分辨(MRTD)算法与共形时域有限差分(CFDTD)算法结合,提出一种新的基于Daubechies尺度函数的共形时域多分辨(CMRTD)方法。该文提出将基于Daubechies尺度函数的MRTD迭代公式分解为若干传统FDTD迭代公式的线性组合,然后对最里面回路上的FDTD分解式运用局部共形技术,再将各个分解式进行线性组合,从而得到CMRTD结果。仿真结果表明,CMRTD方法既保持了MRTD方法节省计算资源、计算效率高等优点,同时明显提高了计算的精度。

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