该公式可计及雷电流波头陡度对磁场的影响。
The formula can reflect the influence of the wavefront steepness of lightning current on the transient magnetic field.
方法用无感电阻网络分流器测量雷电冲击电流，并进行测量重复性、线性度试验和阶跃波响应试验。
Methods to measure the lightning surge current using a shunt with non-inductance resistors network. The experiments on the repetition, linear degree and the step response are carried out.
应用推荐