lightning return stroke

基本解释

There is a return stroke after the lightning hits the ground.
在闪电击向地面以后出现了一次回击。
With the transmission line model of the lightning return stroke, the approximate expressions of the adjacent field of lightning electromagnetic pulse are obtained.
采用雷电回击电流的传输线模型得到了雷电电磁脉冲场的近场近似。
A question of the assumed channel height is represented and the reasonable reasons are given. The conclusion is useful for calculating the lightning return-stroke electromagnetic fields in the future.
指出了国外文献计算回击电磁场时在选取通道高度方面存在的问题，并作出了合理的解释。