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首页> 外文期刊>Antennas and Propagation, IEEE Transactions on >Fast Radio-Wave Propagation Modeling in Tunnels With a Hybrid Vector Parabolic Equation/Waveguide Mode Theory Method
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Fast Radio-Wave Propagation Modeling in Tunnels With a Hybrid Vector Parabolic Equation/Waveguide Mode Theory Method

机译：混合矢量抛物线方程/波导模式理论方法在隧道中快速无线电波传播建模

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摘要

Radio-wave propagation modeling in tunnels plays an important role in designing reliable train communication systems. In recent years, various channel modeling techniques have been presented, each with its own advantages and limitations. This paper presents an accurate and efficient propagation modeling technique, combining the vector parabolic equation (VPE) and waveguide mode theory. The VPE method is applied to analyze the propagation for a short distance from the transmitter. Subsequently, with the fields generated using VPE, a rectangular waveguide model of the tunnel is extracted, leading to rapid, analytical computation of fields over arbitrarily long distances. This hybrid model takes into account realistic tunnel geometries and antenna radiation patterns while ensuring significant computational savings. The accuracy and efficiency of the proposed hybrid model are demonstrated by comparing it with measurements and simulation models in practical cases of road and subway tunnels.
机译：隧道中的无线电波传播建模在设计可靠的列车通信系统中起着重要作用。近年来，已经提出了各种信道建模技术，每种技术都有其自身的优点和局限性。本文结合矢量抛物线方程（VPE）和波导模式理论，提出了一种准确有效的传播建模技术。 VPE方法用于分析与发射器的短距离传播。随后，利用使用VPE生成的场，提取隧道的矩形波导模型，从而对任意长距离的场进行快速的分析计算。该混合模型考虑了实际的隧道几何形状和天线辐射方向图，同时确保了可观的计算节省。通过与实际道路和地铁隧道中的测量和仿真模型进行比较，证明了所提出的混合模型的准确性和效率。

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