墙体对UWB脉冲信号衰减特性的FDTD分析

Analysis of attenuation characteristics of UWB signals penetrating through walls using FDTD arithmetic

用时域有限差分法分析墙体对超宽带脉冲信号传播的影响。计算得出脉冲信号穿墙后的时域波形,利用傅里叶变换得出脉冲信号穿墙后的频谱变化。研究了墙体厚度的变化对脉冲信号的影响以及不同的墙体对穿墙脉冲信号的影响,仿真结果与相关理论一致。

The property that UWB pulse propagating throngh-the-waU has been simulated using FDTD method. Signal of time-domain has been calculated and signal of frequency-domain can also been get by Fourier transform. The attenuation and change of spectrum for the different width walls and different kinds of walls are discussed. The validity of this simulation is demonstrated by related theory.