近地面1553B通信系统HEMP效应试验

HEMP effect experiment for surface 1553B communication system

摘要:

为了考察地面设备抗高空电磁脉冲(HEMP)性能，确定关键耦合节点，寻求有效的加固方法，进行了带1553B通信电缆的某地面监控系统的功能演示设备HEMP效应试验。通过分析电磁脉冲主要耦合通道，针对耦合通道设计实验方案，测试了1553B通信线缆及变压耦合器端口的HEMP耦合信号，分析了系统中变压耦合器及隔离变压器对耦合干扰信号的影响，同时对低通滤波器降低HEMP耦合的加固方法进行了验证。实验结果显示1553B通信系统具有较好的抗HEMP性能，变压耦合器对端口耦合信号有较大影响，采用低通滤波器可以简单有效地降低HEMP耦合强度。

Abstract:

High altitude Electro Magnetic Pulse(HEMP) effect experiments were prosecuted for a surface supervisory control system with a 1553B communication system in order to study the HEMP- resisting capability of surface facility，to explore the key coupling points，and to find a effective hardening method. The electromagnetic coupling ports of entry were analyzed, then examination project according to the coupling ports was designed. The coupling signals on the ports of cable, coupling transformer, and isolation transformer，were tested. The influence of coupling transformer and isolation transformer having on the interference signals were analyzed，the hardening method to reduce HEMP coupling by low-pass filters was validated. The experiment results showed the 1553B communication system was of a better HEMP-resisting capability，the coupling transformer had a strong impact on the coupling signals on the ports of cable，and the low-pass filters would reduce the HEMP coupling level effectively and simply.