雷电电磁场峰值的概率分布
Probability distribution of peak amplitude of lightning electromagnetic field
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摘要: 获得雷电电磁场的随机特性，是研究雷电电磁场对电子系统有害耦合效应评估的基础。基于雷电流的统计特性，在具有一般性的概率框架下讨论雷电电磁场，导出电磁场峰值的概率分布函数及密度函数，采用多重积分法计算出不同位置处电场强度和磁场强度峰值的概率分布图和累积概率分布图，计算结果与蒙特卡洛模拟结果吻合。
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关键词:
- 雷电电磁场 /
- 概率分布 /
- 多重积分 /
- 蒙特卡洛（Monte-Carlo）模拟
Abstract: It requires knowledge of stochastic features of lightning electromagnetic pulse (LEMP) to study effect evaluation of the potentially harmful coupling of LEMP to the electronic systems. Based on statistical characters of lightning currents, LEMP under a general probabilistic framework were discussed, the probability distribution and density functions of peak amplitude of LEMF were deduced. The probability distributions, cumulative probability distributions, means and standard deviations of peak electric field intensity and peak magnetic field intensity at different positions were calculated using multiple-integral method, and the results agree well with the ones obtained by Monte Carlo simulation． -
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