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在复杂电磁环境下,飞行装备很容易受到电磁脉冲的干扰而偏离航线或坠毁。为了增加其抗干扰能力,利用超宽带干扰源对飞行控制装备进行了强电磁脉冲效应试验。根据试验结果并利用电路检测和模拟仿真等办法,得出了电磁脉冲干扰的作用机理,共模电流和差模电压共同作用下使控制箱产生了令飞行器坠毁的畸变控制指令。针对干扰机理,对飞行控制装备提出了“软硬”相结合的电磁防护措施。
In complex electromagnetic environments, flying equipment is susceptible to electromagnetic pulse interference and deviates from the flight path or crashes. In order to increase its anti-jamming capability, the flight control equipment was tested with strong electromagnetic pulse effect using UWB interference sources. According to the test results and the use of circuit detection and simulation, the mechanism of the electromagnetic pulse interference is obtained. The common mode current and the differential mode voltage cause the control box to generate the distortion control instruction that crashes the aircraft. In view of the interference mechanism, the electromagnetic control measures of “soft and hard” combined with the flight control equipment are proposed.