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垂直入射HEMP近地面电磁环境特性研究 被引量:4

Study on Environment Characteristics near the Ground of Normal Incidence High-altitude Electromagnetic Pulse
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摘要 高空核爆电磁脉冲(HEMP)具有覆盖范围广、峰值场强高等特点,对电子设备构成严重威胁。针对有关HEMP标准中主要涉及自由空间HEMP波形描述的情况,研究了双指数HEMP平面波垂直入射地面时,地面附近的电磁脉冲环境特性。基于时域有限差分(FDTD)法提出使用一维合成平面波解决总场空间激励源的引入问题。通过设置不同的入射波状态和环境因素,仿真计算了HEMP在地面附近的电磁脉冲环境参数,并对HEMP在地面附近的传播特点与规律进行了总结和归纳。结果表明,较低位置处反射场削弱了部分入射场,使总场幅度降低;较高位置处经历较为完整的入射场和反射场的冲击;地表介质的电气参数对总场也有影响,其中电导率的影响较大。这些结论有利于指导地面附近电子设备的防护设计。 High-altitude electromagnetic pulse (HEMP) has the characteristics of a wide coverage and high peak field strength, which poses a serious threat to the electronic devices. But the current HEMP standards include only the general wave characteristics in the free space, so the electromagnetic environmental characteristics near the ground induced by the double-exponential HEMP incident plane wave perpendicular to the ground are studied in this paper. Based on the finite difference time domain(FDTD) method, the 1 - D compound plane wave is proposed, which solves the introduction of stimulating source. The different incident wave statuses and environmental factors are set and the electromagnetic environmental parameters near the ground are simulated. Then, the propagation characteristics and trends of the HEMP near the ground are summarized and concluded. The results show that the reflected field weakens the incident one, which makes the total field depressed, especially in the lower position over the ground, and almost integer incident and reflected fields occur in the upper position. In addition, the ground electrical parameters .also affect the total field near the ground, especially the conductivity. The conclusions are helpful to provide guidance for the protection design of electronic devices near the ground.
出处 《电讯技术》 北大核心 2011年第1期98-103,共6页 Telecommunication Engineering
关键词 高空核爆电磁脉冲 地面 电磁脉冲环境 时域有限差分法 电子设备 防护设计 high-altitude electromagnetic pulse(HEMP) ground plane environment of electromagnetic pulse finite difference time domain(FDTD) method electronic device protection design
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  • 1倪谷炎,罗建书,李传胪.线-面传输线Taylor与Agrawal模型解的比较[J].国防科技大学学报,2007,29(5):111-116. 被引量:10
  • 2谢彦召,王赞基,王群书.地面附近架高线缆HEMP响应计算的Agrawal和Taylor模型比较[J].强激光与粒子束,2005,17(4):575-580. 被引量:37
  • 3周颖慧,石立华,高成.一种基于传输线方程的埋地电缆电磁脉冲耦合时域分析方法[J].强激光与粒子束,2006,18(7):1163-1166. 被引量:18
  • 4Agrawal A K, Price H J, Gurbaxani S H. Transient response of multiconductor transmission lines excited by a nonuniform elec- tromagnetic field [J]. IEEE Transactions on Electromagnetic Compatibility, 1980, 22(2): 119-129. 被引量:1
  • 5Taylor C D, Satterwhite R S, Harrison C W. The response of a terminated two wire transmission line exeited by a nonuniform e- lectromagnetic field[J]. IEEE Transactions on Antennas Propa- gat, 1965, 13(6): 987-989. 被引量:1
  • 6Rachidi F. Formulation of the field-to-transmission line coupling equations in terms of magnetic excitation field[J]. IEEE Trans actions on Electromagnetic Compatibility, 1993, 35(3): 404- 407. 被引量:1
  • 7Vance E F. Coupling to shielded cables[M]. NewYork, USA: John Wiley and Sons, 1978. 被引量:1
  • 8Nucci C A, Rachidi F, Ianoa M, et al. Comparison of two cou pling models for lightning-induced overvoltage calculations[J]. IEEE Transactions on Power Delivery, 1995, 10(1) : 330-339. 被引量:1
  • 9Michel Ianoz. Review of new developments in the modeling of lightning electromagnetic effects on overhead lines and buried cables[J]. IEEE Transactions on Electromagnetic Compatibili- ty, 2007, 49(2): 224-235. 被引量:1
  • 10方金鹏.舰船平台上复杂电磁环境对电缆的耦合效应分析[D].上海:上海交通大学,2009. 被引量:1

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