将基于辅助微分方程的完全匹配层(ADE-PML)吸收边界条件引入到基于Daubechies尺度函数的时域多分辨率分析算法中.与目前广泛应用的Berenger完全匹配层(PML)和各向异性介质完全匹配层(APML)相比,该吸收边界条件的实现更加容易且更节省内存.数值结果表明, ADE-PML在吸收传播模和低频凋落模方面均优于PML和APML.
A new implementation of perfectly matched layer (PML) with auxiliary differential equation (ADE-PML) is presented for the multiresolution time-domain method. The implementation is easier to obtain and can save more memories than the popularly used PML proposed by Berenger and the anisotropic perfectly matched layer (APML) when a more generalized medium is treated. Numerical results demonstrate that the ADE-PML is more superior to the PML and APML in absorbing propagation modes and low-frequency evanescent modes.