复杂城市环境电磁态势的场数值分析与测量对比

采用高阶矩量法（method of moment，MoM）结合高频射线法对复杂城市环境中电磁分布进行仿真计算.利用高精度的高阶MoM对辐射源进行精细仿真，利用一致性几何绕射理论的射线模型描述电磁波在电大场景中的传播，并给出了两种方法之间的接口方案.在实际城市环境中对电磁分布和电磁态势进行了有效的计算，选取西安市某城区一平方千米区域进行了实地测量，实测数据与仿真计算进行了对比，取得了比较好的结果，证明了文中方法的有效性和实用性.

Numerical analysis and measured comparison on electromagnetic problems in complex city environments

High order method of moment (MoM) and high frequency ray method are used to simulate the electromagnetic distribution in complex urban environment. High-order MoM method is used to simulate the radiation sources with precision simulation, and the uniform geometrical theory of diffraction method is used to simulate the transmission of electromagnetic waves. Interface schemes of the two methods are presented. In the actual urban environment, the electromagnetic distribution and electromagnetic situation were effectively calculated, and a field survey was carried out in one square kilometer area of a city in Xi'an. The measured data are compared with the simulation ones, and good results are obtained, which proves the effectiveness and practicability of the method.