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基于经典的标量衍射理论，分析了超宽频带电磁脉冲在远场的时间和空间特性，计算了脉冲的频宽和中心频率比值的变化对衍射空间分布的影响．当电磁脉冲的频宽大于其中心频率时，其远场的衍射分布较单色光的情况明显变窄．
Based on the classical scalar diffraction theory, the temporal and spatial characteristics of ultra-wideband electromagnetic pulses in the far field are analyzed. The effect of the variation of pulse width and center frequency ratio on the diffraction spatial distribution is calculated. When the electromagnetic pulse is wider than its center frequency, its diffraction distribution in the far field is significantly narrower than that of monochromatic light.