互联系统差模电流注入等效强电磁脉冲辐射效应试验方法

Since it is high-cost to simulate the high intensity electromagnetic pulse field environment with large space and the application of the existing current injection methods is limited, differential-mode current injection methods equivalent to high-level electromagnetic pulse radiation are proposed. With the antenna and the interconnecting cable as the main coupling routes, the equivalent network models of the systems under test for radiation and injection are built. The method to achieve the equivalence between these two methods is studied. The extrapolation method is proposed to enforce the equivalence between injection and high-level electromagnetic pulse radiation when the EUT response is nonlinear. In order to inject and monitor of differential-mode signals, the coupling devices for different types of electromagnetic pulse are designed based on the theory of the directional coupler. The waveform characteristics of the high-power microwave and the wide-band electromagnetic pulse are also considered during the design process. On this basis, the methods to correct the effects of involving the coupling devices in the systems under test are proposed, and then the equivalence between the injection and the original radiation can be achieved. Since the EUT is located at one side or both sides of the interconnecting cable, the single and double differential-mode current injection methods equivalent to high-level electromagnetic pulse radiation are presented. The proposed methods are used for the accurate assessment of high-level field electromagnetic environment adaptability for interconnected systems.

针对大空间模拟强电磁脉冲场环境代价高昂和现有电流注入方法适用范围受限等瓶颈技术问题，本项目提出差模电流注入等效强电磁脉冲辐射效应试验方法。在天线和互联线缆为主要耦合途径的情况下，建立电磁辐射和差模电流注入时受试系统的等效网络模型，研究两种试验方法实现等效的途径，确定非线性响应条件下注入等效强电磁脉冲辐射的外推方法。为实现差模信号的注入和监测，根据高功率微波和宽带电磁脉冲的波形特征，基于定向耦合器原理研制适合不同类型电磁脉冲的注入/监测耦合装置，为等效注入试验方法提供硬件支撑。在此基础上，提出耦合装置接入受试系统对试验结果影响的校正方法，实现注入试验结果与原有辐射试验结果一致。根据受试设备位于互联线缆一端或两端的情况，总结提出单端和双端差模注入等效强电磁脉冲辐射试验方法，为准确评价互联系统的强场电磁环境适应性提供新型技术手段。

针对大空间模拟强电磁脉冲场环境代价高昂和现有电流注入方法适用范围受限等瓶颈技术问题，本项目提出差模电流注入等效强电磁脉冲辐射效应试验方法。在天线和互联线缆为主要耦合途径的情况下，建立电磁辐射和差模电流注入时受试系统的等效网络模型，研究两种试验方法实现等效的途径，确定非线性响应条件下注入等效强电磁脉冲辐射的外推方法。为实现差模信号的注入和监测，根据高功率微波和宽带电磁脉冲的波形特征，基于定向耦合器原理研制适合不同类型电磁脉冲的注入/监测耦合装置，为等效注入试验方法提供硬件支撑。在此基础上，提出耦合装置接入受试系统对试验结果影响的校正方法，实现注入试验结果与原有辐射试验结果一致。根据受试设备位于互联线缆一端或两端的情况，总结提出单端和双端差模注入等效强电磁脉冲辐射试验方法，为准确评价互联系统的强场电磁环境适应性提供新型技术手段。