超低空目标与粗糙面复合散射的迭代计算

给出了一种计算超低空目标与粗糙面复合电磁散射的降秩电磁流迭代法，并对金属平板目标与粗糙面间的复合散射进行了验证计算，其结果与快速多极子方法结果吻合较好，说明了该方法的有效性。同时，分析研究表明：降秩迭代近似及粗糙面截断对近场散射计算结果影响较小，该方法适用于近场电磁散射计算，并计算了某导弹模型与较大区域粗糙海面间的复合散射贡献。

Iterative Calculating the Composite Scattering between Hedge-hopping Target and Rough Surface

Applied the method of reduced order electromagnetic current iteration method, the composite electromagnetic scattering between hedge-hopping targets and rough surface are calculated. The composite scattering result of metal plate target and smaller area rough surface are consisted with that of the fast multipole polar algorithm. The effectivity of the method is instructed. Synchronously, the analytical study indicates the infection by reduced order iteration and surface-truncating is analyzed, which indicated that the method could satisfy the near-filed electromagnetic scattering application. Finally, the composite scattering between a missile model and a bigger area sea surface are calculated.