随着对武器系统隐身性能要求的不断提高，天线罩设计越来越受到重视。将频率选择表面FSS技术应用于天线罩设计，可以在保证天线正常工作的前提下，实现雷达舱RCS减缩，具有重要工程意义。同时，也对天线罩散射特性精准把握提出了迫切需求。基于平面介质模型的传统建模方法难以应用到复杂曲面天线罩模型，诸如矩量法结合多层快速多极子方法、有限元边界积分等数值方法也面临计算量巨大，迭代难收敛的难题。对此，本项目针对频率选择表面天线罩，研究高效精确的电磁特性建模方法，为天线罩设计提供坚实的理论基础。项目围绕频率选择表面天线罩重点研究基于体面积分方程和有限元的新型区域分解方法。通过新型基函数设计和不连续伽略金积分方程方法来提升计算效率，通过对典型天线罩的计算与测试比对，验证散射模型和数值方法的准确性，最终形成可用于复杂频率选择表面天线罩分析和设计的高效数值分析方法。

The design of radomes has been payed much attentions with continuous enhancement of requirement of stealth performance of weapon system. The application of frequency selective surface for the design of radome can realize the RCS reduction of radar cabin under the condition of assuring antenna work situation, which has important engineering value. In the meanwhile, accurate control of scattering of radomes is also required. Traditional modeling method based on planar dielectric model is difficult for complex curvilinear radomes, numerical methods like the moment method with multilevel fast multipole algorithm, finite element with boundary integral also have to face huge computational cost and are very difficult to converge in iteration process. To solve the above problems, the project aims to study efficient, accurate modeling methods about FSS radome, provide solid theoretic basis for the design of radomes. The contents will include novel domain decomposition methods based on volume/surface integral equation and finite element method respectively. Further, study the way to improve the efficiency by designing new basis functions and using discontinuous Galerkin integral equation. To validate the scattering model and numerical methods, the comparison between computation and measurement of typical FSS radomes will be done. Finally, efficient numerical methods for complicated FSS radome will be developed.