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双语推荐：漏泄同轴电缆

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由于漏泄同轴电缆在特定使用场合里场强覆盖具有明显的优越性，在通信领域中得到了广泛的应用。随着漏泄技术的不断发展，人们对漏泄同轴电缆的应用逐步向宽频带方向发展。因此，提出了一种扩展漏泄电缆频带的方法。这里主要是从漏泄同轴电缆的辐射模型理论出发，通过一系列的计算分析了漏泄电缆单模辐射的产生条件，在此基础上提出了扩展倾斜开槽的漏泄电缆频带的方法，该方法对于设计应用于超宽带通信的漏泄同轴电缆有着重要意义。
As the field strength coverage of leaky coaxial cable in a particular occasions has obvious advantages,it has been widely used in the communication field.With the continuous development of leakage technology,people on the application of leaky coaxial cable to the broadband direction gradual y.Therefore,proposed a method about leaky cable bandwidth expansion,here starting from the radiation model theory of the leaky coaxial cable,through a series of calculations analyzed the produce conditions of single-mode radiation,on this basis proposed the band expansion method of leaky coaxial cable with inclined slots.This method is significant for the design and use of leaky coaxial cable application in ultra wide-band communication.

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介绍CBTC系统的车-地无线通信方式和工程应用情况。在北京地铁运营线路隧道里进行了漏泄同轴电缆的CBTC系统车-地无线传输专项试验,测试了2.4 GHz漏泄同轴电缆在地铁隧道工作环境的路径损耗,并与生产厂提供的理论值进行了对比分析,为以后漏泄同轴电缆在CBTC系统车-地无线通信的工程实施提供链路设计依据。
In Beijing metro operational tunnels, special testing on leaky coaxial cable is conducted on train - trackside wireless transmission in CBTC system. The path loss is tested on the 2.4 GHz leaky coaxial cable in tunnel, and a comparative analysis on theoretical value provided by the manufacturer is conducted, providing a design basis for train- trackside wireless communications of leaky coaxial cable in CBTC system.

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城市轨道交通高架区间场强覆盖弱区,通常可以采用架设天线作为辐射源的空间波覆盖方式及敷设漏泄同轴电缆作为传输线和分布天线的覆盖方式加以解决,结合区间中继设备又可衍生出多种解决方案。重点讨论基站天线覆盖方案、基站天线+直放站天线方案和敷设漏泄同轴电缆方案。
The way of space wave coverage based on installing antenna or laying of coaxial - cable leak- age can be used to solve problems which related to weak wireless field of elevated railway in urban rail transit system. Combined with the repeater, various technical proposals about these problems could be derived. This paper mainly discusses three solutions, which respectively focus on setting up station anten- na, installing station antenna and directly repeater station, and laying of coaxial cable leakage.

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通过对VISA虚拟架构的研究,以NI LabVIEW 8.20开发环境为基础,通过GPIB接口与RS FSL3以及RS SMB100A进行连接,以USB接口与NI USB-9162相连,并以Microsoft Office Access数据库作为载体,进行损耗测量数据记录、分析、报表生成等工作,共同构建了一个漏泄同轴电缆测试系统。该测试系统已在江苏一知名电缆制造工厂投入测试应用。
Based on the research of virtual instrument software architecture (VISA), a testing system of the leaky coaxial ca-ble was constructed in NI LabVIEW 8.20 development environment. In the testing system, R&S (Rohde & Schwarz) FSL3 and R&S SMB100A are connected to the system via GPIB interface, and NI USB-9162 is connected via USB interface. Microsoft Of-fice Access database is used as a carrier to record and analyze the measured loss data, and realize the report generation. The test system presented in this paper has been applied to a famous cable factory in Jiangsu, China.

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地铁中无线信号的传播环境非常复杂，给无线信号的覆盖带来许多困难，文章着重论述了地铁中不同空间环境下专用无线信号的覆盖方案及场强覆盖计算，并综合了合各厂商产品的技术指标特性以及在地铁无线覆盖设计方面的经验，给出了主要射频、漏泄同轴电缆等相关场强覆盖所需指标，对地铁专用无线覆盖设计具有一定参考价值。
The complexity of transmission environment in Metro system brings many difficulties to the coverage of radio signal. This paper focuses on the coverage scheme and field strength computation of dedicated radio signal with different spatial envi-ronments in Metro system. Product technical indicator characteristics and design experience of the manufactures are also anal-yzed to give the main Radio Frequency, leaky coaxial cable and other related field strength coverage indicators. The paper has a certain reference value for the design of dedicated radio signal coverage in Metro system.

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在二十世纪，地铁/轻轨无线通信系统作为运输与通信高度结合的产物，并且逐渐成为地铁、轻轨运营的关键和重要组成部分，凭借通信系统可以提高运输效率，同时可以保证行车的安全性。对于地铁/轻轨无线通信系统来说，其组成主要包括：无线集群通信、光纤传输、中继器加漏泄同轴电缆传输、无线寻呼引入，以及蜂窝电话引入等子系统。从隶属关系来看，地铁/轻轨无线通信可以划归为移动通信范畴，同时具有限定空间、限定场强覆盖范围、技术要求高、专用性强等特点。
The wireless communication system of metro and light rail is a product of the highly integration of transport and communication in the 20th century, and it has gradually become the key and the important part of the operation of metro and light rail. With communication system, it can improve the efficiency of transportation and guarantee the safety of driving. The wireless communication system of metro and light rail mainly includes wireless communications, optical fiber transmission, coaxial cable transmission of the refueling, spilling and drainage of the repeater, wireless paging import, cell phone import and other subsystems. In the view of membership function, metro and light rail wireless communication can be characterized as mobile communication, at the same time, it has many characteristics, such as definitive space, definitive coverage area of field intensity range, high technical requirements, high specificity and so on.

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介绍了直放站漏泄同轴电缆(LCX)监测系统的构成及其工作流程,选取了西安铁路局宝天线2段不同公里标处LCX作为试验点,架设了LCX实时监测试验设备和现场系统设备,进行了现场试验及试验数据的统计与分析。试验结果表明,LCX监测系统设备可以准确监测LCX的衰减,监测数据可以正常上报网管中心并在网管界面上显示,LCX实时监测系统符合设计要求,能够满足西安铁路局宝天线现场实际应用需要。
The paper introduced the structure and working process of the leaky coaxial cable LCX repeater monitoring system,selected the Xi''an Railway Bureau Baotian Line two different kilometer mark LCX as test points,set up the leaky coaxial cable LCX real-time monitoring test equipment and on-site system equipment,on-site test statistics and analysis of test and test data.The test results showed that,the leaky coaxial cable LCX monitoring system equipment can be attenuated to accurately monitor LCX,monitoring data can be normal to the network management center,and be displayed in the inter-face of network management,real time monitoring system of leaky coaxial cable LCX conforms to the design requirements can satisfy the Xi''an Railway Bureau Baotian Line with the practical application needs.

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