摘要
铺设金属网的地面作为一种复杂的地表,区别于均匀半空间均匀地面,金属网必然会影响地表附近上方的电磁环境,因此,对其电磁环境的准确描述和分析十分必要。为此,以地面铺设平行金属阵列为典型情形,提出了一种计算平行金属阵列地面附近上方高空核爆电磁脉冲环境的解析方案,并且分析了地面铺设平行金属阵列结构之后对早期高空核爆电磁脉冲环境的影响。结果表明:当地面铺设平行金属线阵列后,相比于均匀半空间地面而言,不同高度下的水平极化场,反射场与入射场相互抵消的现象更加明显,使得总水平极化场衰减更为严重;而对于不同高度下的垂直极化场,其反射场和入射场的叠加现象也更加明显,使得地面附近上方的垂直场强幅值大于入射波场强幅值的效应加强。
As a complex surface,the ground with metal mesh is different from uniform half space ground.Metal mesh will inevitably affect the electromagnetic environment near and above the ground surface and it is very necessary to accurately describe and analyze its electromagnetic environment.Therefore,taking the ground laying the parallel wire array as a typical case,an analytical calculation scheme for calculating the electromagnetic pulse environment of high-altitude electromagnetic pulse above the ground with the parallel wire array is proposed,and the effect of laying parallel wire array on the electromagnetic pulse environment of early high-altitude electromagnetic pulse is analyzed.The results show that when the parallel metal wire array is laid on the ground,the phenomenon of mutual cancellation between the reflected field and the incident field is more obvious in the horizontal polarization field at different heights comparing with the uniform half space ground,which makes the attenuation of the total horizontal polarization field more serious.For the vertical polarization field at different heights,the superposition of the reflected field and the incident field is more obvious,which strengthens the effect that the amplitude of the vertical field near the ground is greater than that of the incident wave.
作者
孙宪钢
魏兵
李跃波
杨杰
熊久良
SUN Xian-gang;WEI Bing;LI Yue-bo;YANG Jie;XIONG Jiu-liang(School of Physics,Xidian University,Xi'an 710071,China;Institute of National Defense Engineering,Academy of Military Science of PLA,Luoyang 471023,China)
出处
《微波学报》
CSCD
北大核心
2023年第3期17-22,共6页
Journal of Microwaves
关键词
平行金属线阵列
高空核爆电磁脉冲
地面上方的电磁环境
parallel wire array
high-altitude electromagnetic pulse
electromagnetic environment over the ground
