In order to determine the vulnerability of electronics system to Electro Magnetic Pulse(EMP), and to design the electronic systems which can withstand the threat of EMP,the EMP characteristics and the energy for EMP coupling into components and electronic system are studied, as well as the influence caused by degraded tactical performance of electronic systems. The design process of small electromagnetic field sensor in the closed cavity for resisting strong electromagnetic interference is introduced. Detailed analysis through theoretical calculation on the equivalent circuit of the sensor, matching network and measurement method is performed. The development process and actual applications are also introduced. Internal Electro Magnetic Pulse(IEMP) environment parameters are obtained in the small cavity body. This work provides a reference for the anti-electromagnetic interference reinforcement design of electronic systems.%为了确定电子系统的电磁脉冲(EMP)易损性并设计能承受电磁脉冲(EMP)威胁的电子系统,研究电磁脉冲(EMP)特性和电磁脉冲(EMP)耦合进入元件和电子系统的能量,以及电子系统战术性能降级所产生的影响.介绍了封闭腔体内抗强电磁干扰的小型电磁场传感器的设计过程,对该传感器的等效电路、匹配网络和测量方法进行了详细的理论计算分析.也对研制过程和实际应用情况进行了介绍.得到了小型腔体内的内电磁脉冲(IEMP)环境参数.为电子系统提供了抗电磁干扰以及加固设计的参考数据.
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