Numerical analysis of time-domain response for building to different electromagnetic pulses

To understand timedomain change characteristics of electrical field in the building, the simulation of three electromagnetic pulses propagating, reflecting and transmitting in a building was done by FDTD method. The influence of different pulse parameters on the maximum strength and distribution of electric field were generally analyzed. With the incidence of differential Gaussian pulses with varied pulse width, the maximum strength in the building changes within 3.0~5.5 dB and the range of reinforced field reduces as pulse width increases, and the required minimum pulse repetition frequency is the highest. The maximum strength and distribution area of electric field are the least in the building radiated by Gaussian pulses, of which the minimum repetition frequency is the lowest. When t