Segmented Locally One Dimensional FDTD (S-LOD-FDTD) Method for EM Propagation Modeling in Large Complex Tunnel Environments

摘要

We propose a novel segmented locally one dimensional finite difference time domain (S-LOD-FDTD) method for modeling the electromagnetic wave propagation inside an electrically large tunnel. The proposed S-LOD-FDTD method reduces the computational redundancy by dividing the problem space into segments. To validate this method, we simulate the propagation in real tunnels and compare the results with the published experimental data. The comparisons reveal that the proposed method can predict the fields accurately in real, large tunnels at longer ranges.