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A Survey of Radio Propagation Modeling for Tunnels

机译：隧道的无线电传播建模研究

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摘要

Radio signal propagation modeling plays an important role in designing wireless communication systems. The propagation models are used to calculate the number and position of base stations and predict the radio coverage. Different models have been developed to predict radio propagation behavior for wireless communication systems in different operating environments. In this paper we shall limit our discussion to the latest achievements in radio propagation modeling related to tunnels. The main modeling approaches used for propagation in tunnels are reviewed, namely, numerical methods for solving Maxwell equations, waveguide or modal approach, ray tracing based methods and two-slope path loss modeling. They are discussed in terms of modeling complexity and required information on the environment including tunnel geometry and electric as well as magnetic properties of walls.
机译：无线电信号传播建模在设计无线通信系统中起着重要作用。传播模型用于计算基站的数量和位置，并预测无线电覆盖范围。已经开发出不同的模型来预测不同操作环境中无线通信系统的无线电传播行为。在本文中，我们将讨论限于与隧道有关的无线电传播建模的最新成果。综述了隧道中传播的主要建模方法，即求解麦克斯韦方程组的数值方法，波导或模态方法，基于射线追踪的方法以及两坡度路径损耗建模。根据建模的复杂性和所需的环境信息（包括隧道的几何形状以及墙的电气和磁性能）对它们进行了讨论。

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