平面电流脉冲远区能量衰减特性研究

A Study about Energy Attenuation of Planar Pulses in Far-Zone

运用时域矢势积分方程分析了对称结构平面上三角脉冲、多周期正弦脉冲、等腰梯形脉冲、高斯脉冲和电磁导弹实验脉冲等多种不同波形的电流脉冲;讨论了远区轴线上辐射的电磁场。通过比较分析,得到远区辐射能量衰减特性的一般规律和特殊规律。

By means of integral equation of vector potential in the time domain and using several simple approximations, the electromagnetic fields on the axis in the far zone are calculated and compared. The attenuation characteristic of electromagnetic energy in the far zone radiated by some electromagnetic pulses are discussed. These pulses include the triangular pulse, the sinusoidal pulse of multiple cycles, the isosceles trapeze pulse, the Gauss pulse and the pulse produced in the experiment of the electromagnetic missile. Some general conclusions and special conclusions are obtained.