复合材料雷体的UWB-EMP耦合效应研究

Coupling effect of UWB-EMP on landmine shell made with composite materials

针对高功率微波(High power microwave,HPM)扫雷装置对现代地雷构成的严重威胁,为提高地雷抗电磁毁伤能力,将不锈钢纤维(Stainless steel fibers,SSF)作为聚酰胺树脂的导电填料,研究新型复合屏蔽材料地雷壳体。针对雷体结构和布设状态,采用时域有限差分(Finite difference time domain,FDTD)数值方法,分析该壳体的超宽带电磁脉冲(Ultra-wide band electromagnetic pulse,UWB-EMP)孔缝耦合规律。加工复合材料地雷壳体样品,内置电子引信并连接电引火头,在微波暗室进行峰值功率1 GW的UWB-EMP辐照下的效应实验,壳体放置天线前的距离大于0.5 m时,内部电子引信能正常工作。结果表明:该壳体能有效提高电子引信地雷抗强电磁毁伤等复杂战场电磁环境下的生存能力。

In view of the serious threats of high power microwave （ HPM ） mine sweepers to modern landmines,in order to improve the capability of landmines against electromagnetic damage, a new kind of landmine shell made with composite materials is studied using stainless steel fibers（ SSF） to fill polyamide resin. Based on the shell structure and setting pose of landmines, the slot coupling effect of ultra-wide band electromagnetic pulse（ UWB-EMP） on landmine shell is analyzed by finite＆amp;nbsp;difference time domain （ FDTD ） numerical calculation. Landmine shell samples are prepared with composite materials. When electronical fuzes connected with electrical fire head are fit under the shell in the microwave anechoic chamber, experiments of damage effect of UWB electromagnetic pulse radiation with peak power of 1 GW are conducted. When the distance between shell and antenna is more than 50 cm,the fuze in the shell can work normally. The results show the shells can promote the viability of landmines with electronical fuzes against strong electromagnetic damage in high power electromagnetic environment.