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利用时域有限差分方法（ Ｆ Ｄ Ｔ Ｄ Ｍ ｅｔｈｏｄ）研究了快上升前沿电磁脉冲（ Ｆ Ｒ Ｅ Ｍ Ｐ）对目标腔体的孔腔共振效应。研究表明：由于 Ｆ Ｒ Ｅ Ｍ Ｐ 的高频分量丰富，使得 Ｆ Ｒ Ｅ Ｍ Ｐ更容易通过目标腔体上的孔缝，与目标腔体发生孔腔共振。由于孔缝的对外辐射，振荡幅度将逐渐减弱。
The time-domain finite difference method (F DT D M ethod) was used to study the cavity resonance effect of fast rising front electromagnetic pulse (F R E M P) on the target cavity. The results show that due to the high frequency component of F RE M P, F R E M P can easily resonate with the target cavity through the hole in the target cavity. Due to the aperture of the external radiation, the oscillation amplitude will gradually diminish.