【摘要】 传统的基于非均匀有理B样条(NURBS)曲面建模的物理光学结合矩量法(MoM-PO),采用迭代电压矩阵实现MoM-PO混合过程可能存在迭代收敛性问题.针对该问题,采用修改阻抗矩阵实现MoM-PO混合过程,避免了潜在的迭代收敛性问题.采用Ludwig积分结合驻相法(SPM)计算Bezier曲面上物理光学电流的积分,既克服了传统方法中天线距离散射体较近时的算法失效,又维持了算法的效率优势.数值结果与MoM和三角形MoM-PO方法进行对比,证明了该方法的有效性.更多还原

【Abstract】 The conventional MoM-PO(Method of Moments-Physics Optics) method based on NURBS(None Uniform Rational B Spline) modeling is implemented by modifying the voltage matrix,the problem of iterative misconvergence may appear.To solve this problem,a method of modifying the impedance matrix is presented to avoid the potential misconvergence.Ludwig integral combining with SPM is utilized to calculate the integral of PO currents on Bezier surfaces.It overcomes the invalidity in the conventional method while keeping its efficiency.The comparison of the results obtained by this method with the ones in the literature and from pure MoM shows feasibility and accuracy of the present method.更多还原