摘要
分析线缆的电磁脉冲效应机理是采取措施、加强线缆电磁防护的必要步骤。以高空核爆电磁脉冲(HEMP)作为入射源,基于时域有限差分(FDTD)方法和Noda细线模型,分析计算了不同状态下近地面线缆的电磁脉冲效应。结果表明,由于受到地面环境场的影响,地面附近开路线缆的响应电流其幅值比在自由空间中的小,振荡频率亦在逐渐降低;带负载线缆在电磁脉冲的作用下,负载的响应电流随阻抗的不同亦呈现出明显不同的特征。所得结论有利于指导线缆的电磁防护。
The analysis on the cable effect mechanism under electromagnetic pulse is the necessary step to take the measures to strengthen the cable electromagnetic protection,which possess important defense and military significance.In this paper,high-altitude nuclear electromagnetic pulse （HEMP） acts as the incident source.By the finite-difference time-domain （FDTD） method and Noda thin line model,the electromagnetic pulse effects of the cable near ground under different conditions are analyzed and calculated.The results show that,due to the ground environment field,the current response amplitude of open cable near the ground is smaller than that in a free space,and the oscillation frequency is also gradually reduced;in the case of the cables with load in the electromagnetic pulse,the response current of load is also found significantly different characteristics with different impedance.The conclusions can be the guidance for cable electromagnetic protection.
出处
《无线电工程》
2014年第11期49-51,76,共4页
Radio Engineering
基金
国家部委基金资助项目
关键词
近地面
线缆
电磁脉冲
效应
near the ground
cable
electromagnetic pulse
effect
