| 隧道内圆极化电磁波传播特性的研究 |
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| 引用本文： | 王正斌,;毛巍威,;秦卫平.隧道内圆极化电磁波传播特性的研究[J].南京邮电学院学报(自然科学版),2009(2):47-50. |
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| 作者姓名： | 王正斌 ;毛巍威 ;秦卫平 |
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| 作者单位： | [1]南京邮电大学理学院,江苏南京210003; [2]南京大学电子科学与工程系,江苏南京210093 |
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| 摘 要： | 交通隧道的发展要求实现全程的无线通信。运用波导理论及格林函数法对圆极化电磁波在长直圆形隧道中的场分布及传播特性进行了研究，得到了轴向距离的电场分布计算表达式，与已有隧道内传播损耗模型的比较也表明此模型更准确有效，其结果对于隧道内通信网络的优化有一定的指导意义。
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| 关 键 词： | 隧道通信 电波传播 路径损耗模型 |
Study on the Propagation Properties of the Circular Polarized Wave in a Long Tunnel |
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| Institution: | WANG Zheng-bin,MAO Wei-wei,QIN Wei-ping(1. College of Science, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;2. Department of Electronic Science and Engineering,Nanjing University,Nanjing 210093 ,China) |
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| Abstract: | The development of traffic tunnels requires the full coverage of wireless communications. The waveguide theory and Green＇ s function are used to analyze the propagation properties of the circular polarized wave in a long tunnel. And an explicit expression of the axial electric field strength is derived by rigorous mathematical deduction. The comparision with the existent models has also proved the efficiency and accuracy of the model. The results may be useful in the network optimization of communication systems in tunnels. |
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| Keywords: | communications in tunnels radio propagation path-loss model |
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