摘要
地下目标的瞬态电磁散射分析对于探测、检验及识别埋地目标 ,特别是冲击探地雷达的研究具有重要的理论和应用价值。本文用FDTD三维建模计算在收发天线作用下地下无限长管道的时域散射场 ,重点探讨适用于吸收土壤中凋落波的GPML吸收边界以及处理有耗色散媒质的 (FD) 2 TD算法 ,并利用所得数据进行成像分析。BP方法成像结果证明了整个模拟计算过程的正确性。
Simulation on transient electromagnetic scattering for underground objects has important academic and practical value for detecting, verifying and identifying buried objects, especially for researching on impulse Ground Penetrating Radar(GPR). Using 3 D FDTD modeling, we calculate time domain scattering field of underground infinite pipes illuminated by transmitting and receiving(T/R) antennas. We focus on GPML absorbing boundary conditions for absorbing decay wave in the soil, and (FD) 2/TD algorithm for dealing with lossy dispersive media. The results are applied to image with BP method, and the conclusion has proved the validity of the simulation.
出处
《微波学报》
CSCD
北大核心
2004年第4期49-53,共5页
Journal of Microwaves
