Electromagnetic Pulse Coupling Characteristics of a Vehicle in High Altitude Nuclear Explosion Environment

doi:10.3969/j.issn.1000-1093.2022.02.015

Abstract

Abstract: Electromagnetic pulse coupling threshold is the basic basis for the decision-making of operational employment of equipment in the nuclear explosion environment and the optimization of its anti-nuclear reinforcement. On account of the fact that the immunity to electromagnetic pulse of a vehicle is unknown, the coupling characteristics of high altitude nuclear electromagnetic pulse (HEMP) are studied. The finite-difference time-domain (FDTD) method is applied to the research on the coupling characteristics of HEMP of a vehicle. The FDTD method for the research on HEMP coupling effect was verified through the radio antenna irradiation test of the vehicle, and the change of electric field inside the vehicle in HEMP environment is analyzed systematically starting from the observation hole of the vehicle. It is found that the amplitude of the coupling electric field in most of the space within the vehicle is less than 2 kV/m, and the amplitude of the electric field near the observation hole is higher when HEMP is normal incident. The suggestions of electromagnetic pulse protection are proposed from the relevant distribution laws of the electric field in the vehicle: the electronic equipment and wiring in the vehicle should be as far away from the observation hole as possible; the amplitude of coupling electric field at the observation hole is reduced by using shielding glass; and when receiving the warning information related to nuclear explosion, the electronic equipment should be quickly moveed as far away from the observation hole as possible to prevent damage.

Key words: electromagneticpulse, highaltitudenuclearexplosion, finite-differencetime-domainmethod, couplingeffect

CLC Number:

TN78

NIE Kunlin, ZHAO Wei, LI Peng, WEI Yongli, LIU Xin, LI Xiaoqiang, ZHANG Xiong, ZHU Zhizhen, ZHU Xuezheng, ZHENG Yi. Electromagnetic Pulse Coupling Characteristics of a Vehicle in High Altitude Nuclear Explosion Environment[J]. Acta Armamentarii, 2022, 43(2): 372-382.

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