计算地闪回击电流水平电场的混合法  

A Composite Formula for Calculation of Horizontal Electric Field Generated by Return Strokes

作　　者：杨春山[1] 周璧华[1] 陈彬[1] 

机构地区：[1]解放军理工大学工程兵工程学院,南京210007

出　　处：《微波学报》2003年第2期81-84,共4页Journal of Microwaves

基　　金：国家自然科学基金资助项目 (5 0 2 370 40 )

摘　　要：提出了一种计算地闪回击电流水平电场的混合法。混合法采用近似镜像法计算接近地面的电流产生的水平电场 ,采用表面阻抗法计算高处电流产生的水平电场 ,有效地克服了雷电水平电场近场计算的困难 ,提高了计算精度 ,扩大了计算范围。数值计算结果验证了混合法的有效性。A composite formula for calculation of horizontal electric field generated by return stroke current is presented. It adopts quasi-image formula to calculate the horizontal electric field generated by the subaerial current and adopts surface impedance formula to calculate the horizontal electric field generated by the higher current. This formula overcomes the difficulty of the calculation of lightning horizontal electric field at close range, improves the calculational accuracy and extends the calculational range. The numerical results confirm the validity of this formula.

关 键 词：地闪回击电流 水平电场 混合法 近似镜像法 表面阻抗法 雷电 

分 类 号：TN011[电子电信—物理电子学]