高强辐射场防护逐渐受到重视，并成为飞机设计和机载设备装机的必要条件。将自主研发的大规模并行三维时域全波电磁模拟软件JEMS-FDTD应用于飞机高强辐射场(HIRF)仿真。数值模拟中为保证计算精度，采用了非均匀网格及共形网格技术。根据实验条件，平面波近似与实验条件差异较大，需考虑天线近场效应，故构建了球面波等效源。给出了平面波近似及球面波近似下的仿真结果与实验结果的对比，结果显示，球面波近似与实验结果更加吻合。在完成数值模拟的基础上，采用PFC方法对仿真结果与实验结果的吻合度进行了评估，评估等级与欧盟HIRF-SE项目定级相当。

High intensity radiation field (HIRF) has been paid more and more attention and HIRF protection has become a necessary condition for aircraft design and equipment installation. This paper demonstrates a massively parallel 3D full-wave electromagnetic field simulation program software JEMS-FDTD and its application in HIRF simulation on a real aircraft. In order to ensure the accuracy of calculation, the non-uniform and conformal FDTD computing technology has been used. In addition, the spherical wave equivalent source is constructed to reflect the near field effect of the antenna. Finally, the simulation results are compared with the experimental results.