中文摘要：

提出一种稳定高效的物理光学方法结合矩量法的混合方法,用于快速分析非均匀有理B样条曲面建模电大平台附近天线的受扰方向图.采用修改阻抗矩阵的方法实现了矩量法区域和物理光学区域的混合作用,避免了迭代方法的收敛不确定性.采用驻相法计算物理光学区域感应电流的积分.引入矩量法区域分组及插值驻相点技术来减少优化函数的调用次数,提高算法效率.数值结果与传统的三角形物理光学方法结合矩量法方法得到的结果相比吻合良好,但计算效率比传统方法的效率大幅度提高.

英文摘要：

An efficient stable moments-physics optics（MOM-PO） hybrid method is proposed to calculate the disturbed pattern of an antenna around an electrically large platform modeled with Non Uniform Rational B Spline（NURBS） surfaces.Modifying the impendence matrix is used to implement the interaction of the MOM region and PO region for avoiding the convergence issue.The stationary phase method（SPM） is used to calculate the integral of the induced current.Both grouping of MOM regions and interpolation of stationary points are used to accelerate the present approach.Results obtained by this method agree well with that from the traditional Triangle MOM-PO.Comparison of execution times of each method demonstrates that the present method is accurate enough and much more efficient.