中文摘要：

矩量法（MOM）在求解电磁场散射问题时，当未知量数目比较大时，其内存占用和计算时间非常大。基于最佳一致逼近理论构造了高阶矩量法，并引人了计算统一设备架构（CUDA）技术，在图形处理器（GPU）上实现了并行加速计算二维电磁散射问题。实例结果表明，在与快速多极子算法（FMM）相对比下，该方法在较低剖分的情况下，具有很高的计算精度，并且在阻抗矩阵填充和矩矢相乘时的速度大大提升，适用于电大尺寸目标的散射问题。

英文摘要：

The method of moments （MOM） is usually used to solve the electromagnetic scattering problems. When the number of unknowns is increasing, the memory and computation time consumed becomes insufferable. In this paper, the best uniform approximation theory is used to construct a high-order method of moments, and the Compute Unified Device Ar- chitecture （CUDA） technology based on graphics processor unit （GPU） is introduced to achieve parallel speed up two-di- mensional electromagnetic scattering problems. Numerical results show that compared with the FMM, the proposed method has higher accuracy with lower discretization, and the speed of impedance matrix filling and moment vector multiply is greatly improved, which can be used as an efficient tool to solving the scattering problems of the electrically large targets.