In recent years, various techniques have been applied to modeling radio-wave propagation
in railway networks, each one presenting its own advantages and limitations. This paper …

Vector parabolic equation (VPE) methods have been widely applied to the modeling of radio-
wave propagation in tunnel environments, offering high computational efficiency and fidelity …

Communication-based train-control (CBTC) systems are aimed at replacing conventional
rail signaling with train control enabled by wireless communication between the train and a …

Radio-wave propagation modeling in tunnels plays an important role in designing reliable
train communication systems. In recent years, various channel modeling techniques have …

We put forward a new ray tracing method for electromagnetic wave propagation based on
piecewise conformal transformations. Our approach is based on our previous research …

Radio-wave propagation in tunnels and mines can be qualitatively understood by
representing these environments as overmoded waveguides. Waveguide models are fast …

间隔情况, 将电磁波传播路径近似为不同曲率半径的圆弧的组合, 通过保角变换给出各圆弧的
有效地球球半径. 利用有效地球半径可以把圆弧路径变换为直线路径, 从而简化了电磁波传播 …

Over-water communication has been an important research field of wireless
communications and radar. Since there are so many parameters in this environment that are …