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为研究调频无线电引信抗电磁干扰性能,开展了调频引信扫频波辐照实验,获得了引信工作状态下的电磁辐照效应规律、能量耦合通道及失效机理。实验表明,当弹体轴线平行于辐射场传播方向时,引信误动作的辐照能量最小;随着扫频频段与引信工作频段偏移量增大,引信误动作所需扫频能量增大。对引信进行改装并做对比实验,发现引信天线是干扰的主要耦合途径。干扰能量通过天线耦合到引信高频电路,引信的工作状态发生改变,从而使引信误动作。
In order to study the anti-electromagnetic interference performance of FM radio fuze, the frequency-sweep fuze swept frequency wave irradiation experiment was carried out and the electromagnetic radiation effect law, energy coupling channel and failure mechanism under the fuze working condition were obtained. Experiments show that when the axis of the projectile is parallel to the propagation direction of the radiation field, the irradiation energy of the fuze misoperation is the smallest. As the offset of the frequency band of the fuze band and the working frequency band of the fuze increases, the energy of the sweep energy required for the erroneous operation of the fuze increases. Fuze modifications and do comparative experiments and found that the fuse is the main channel of interference coupling. The interference energy is coupled to the high frequency circuit of the fuze through the antenna, the working status of the fuze is changed, so that the fuze malfunctions.