【摘要】 对基于Daubechies小波尺度函数的时域多分辨分析(MRTD)算法进行了详细论述,推导了MRTD算法的完全匹配层(PML)吸收边界条件,为克服传统MRTD方法中基函数存在着非局部性的缺点,在源的加入上采用了纯散射场方法;并应用该算法对多目标的电磁散射特性进行了分析,数值结果表明,MRTD算法与传统的时域有限差分法结果相吻合,大大节约了计算资源。更多还原

【Abstract】 The multiresolution time-domain(MRTD) algorithm based on the scaling function of the Daubechies wavelet is introduced,and the perfectly matched layer(PML) absorbing boundary condition for the algorithm is deduced.In order to overcome the difficulties due to the nonlocalized property of the MRTD basis functions,the pure scattered-field formulation is adopted.The method presented is applied to the scattering analysis of multiple conducting objects,and the numerical results are compared with those by the traditional finite-difference time-domain(FDTD) method.It is shown that the computational resource is reduced drastically without sacrificing much accuracy.更多还原