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基于gaver-stehfest算法的矩形发射回线激发的瞬变电磁场

Keywords: g-s算法,矩形回线,瞬变电磁场

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Abstract:

?文中将矩形发射回线看作由无数磁偶源组成,并利用由垂直磁偶源激发的电场对磁矩按回线面积积分,推导出了矩形回线激发的频率域电场表达式,采用g-s(gaver-stehfest)算法求得时间域电场表达式,根据法拉第电磁感应定律,利用电场强度阶跃响应最终求得磁感应强度脉冲响应。将不同系数的g-s算法计算的感应电动势与张成范等计算的感应电动势相比较可知:采用14个系数时的g-s算法计算的感应电动势精度最高,最大相对误差为-3.8%,且表现出计算感应电动势的精度早期较高、晚期较低的特点。

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