HEMP effect experiment for surface 1553B communication system

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.