【摘要】 推导了一种求解介质目标的PMCHWT方程,并应用到非均匀介质目标的电磁散射问题中。为了加速矩阵方程的求解,引入了db97双正交小波变换对阻抗矩阵进行稀疏化处理;对均匀介质目标与非均匀介质目标的电磁散射特性进行了分析,将结果与普通的电场积分方程以及体积分方程的计算结果相比较;数值结果表明,PMCHWT方程相比于普通的电场积分方程具有抗内谐振的优点,双正交小波变换的使用大大加速了方程的求解速度。更多还原

【Abstract】 The PMCHWT equation for solving dielectric scattering problems is derived and applied to the scattering analysis of inhomogeneous dielectric objects.To speed up the solution of the matrix equation,the db97 biorthogonal discrete wavelet transform(DWT) is introduced to sparse processing of the impedance matrix.The scattering characters of homogeneous dielectric objects and inhomogeneous dielectric bodies are analyzed,and the results are compared with those of the electric field integral equation(EFIE) and volume integral equation(VIE).It is shown that the PMCHWT equation can eliminate the interior resonance problem,and the biorthogonal discrete wavelet transform can speed up the solution of the matrix equation.更多还原