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摘要：随着人们在地铁中日常使用手机越来越多，人们对通信环境要求越来越高，特别是对于一些新开通的地铁线路更是如此。然而地铁中覆盖工程量大，要求多，需考虑各方面因素，同时在地铁覆盖中存在漏洞以及覆盖死角，因此地铁中覆盖设计在新开地铁设计中越来越重要。本文叙述了地铁隧道及站台中无线信号的覆盖，并分析泄露电缆在地铁覆盖方案中的应用。通过对地铁站台以及隧道的环境分析，以南京地铁一号线为例，提出一种可行的设计方案，使地铁隧道及站台的无线网络覆盖达到一个理想的效果，解决覆盖盲区问题，让乘客有个畅通的网络通信环境，更提高了行车安全性、运营效率和管理水平，改善服务质量。20577
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关键词：地铁隧道；站台；无线覆盖；泄漏电缆；天馈系统
The Program Of Subway Tunnels And Stations Wireless Coverage
Abstract: As mobile users have more and more opportunities to use a mobile phone on the tube, they are urgently to be provided with a better environment for mobile communications, especially for some new operating line. However, for the big scale of the coverage and the subway scene communications systems engineering, the very complex factors, and the tunnel covering loopholes and blind area problem has plagued the industry, the subway scene communications covers system design and construction is being paid more and more attention. This paper discusses the wireless signal propagation environment in a subway tunnel and station and wireless network coverage scheme, and emphatically discusses the leakage cable cover technology. By the analysis of subway station, we use the environment of the tunnel in Nanjing metro line 1 as an example to put forward a feasible design scheme of the metro tunnel and the platform of wireless network coverage to achieve an ideal effect, so we can solve the problem of coverage blind area, to make the passengers have a smooth network communication environment. Moreover, we can improve the driving safety, operation efficiency and management level and service quality.
KeyWords: subway tunnel; platform; wireless coverage; leaked cables; antenna system
毕业论文目录
1绪论 1
1.1 课题的目的和意义 1
1.2 国内外研究现状与水平 1
1.2.1 在国内 1
1.2.2在国外 2
1.3 发展趋势 2
1.4 课题调研 3
2无线信号覆盖分析 4
2.1地铁覆盖信号源的选择及优缺点比较 4
2.1.1 微蜂窝式有线接入 4
2.1.2 宏蜂窝式无线接入 4
2.1.3直放站接入 4
2.2 泄露电缆的简述 5
2.2.1 泄漏电缆的结构 5
2.2.2 泄漏电缆的工作原理 6
2.2.3 泄漏电缆的种类 7
2.2.4 泄漏电缆覆盖设计的一般步骤 8
2.2.5 泄漏电缆的性能指标 8
3 地铁隧道及站台无线覆盖设计 10
3.1 地铁覆盖环境简述 10
3.2隧道覆盖天馈系统的选择 11
3.2.1同轴馈电无源分布式天线 11
3.2.2 光纤馈电有源分布式天线系统 12
3.2.3泄露电缆 12
3.3 信号源引入 12
3.3.1 话务模型 13
3.3.2信号源引入方式 13
3.4 地铁隧道及站台的无线覆盖 15
3.4.1分布式定向天线方式 15
3.4.2 泄漏电缆方式 17
3.4.3 站台和站厅覆盖 18