东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

Train crossing modeling based on measurements and best numerical approximation in subway tunnels

ISSN号：1002-0802
期刊名称：《通信技术》
时间：0
分类：U284.482[交通运输工程—交通信息工程及控制;交通运输工程—道路与铁道工程] TN946.1[电子电信—信号与信息处理;电子电信—信息与通信工程]
作者机构：[1]State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, P. R. China, [2]Escuela Universitaria de Ingenieria Tecnica de Telecomunicacion, Universidad Politecnica de Madrid, Madrid 28031, Spain
相关基金：Supported by the National Natural Science Foundation of China （ No. 60830001 ）, Program for New Century Excellent Talents in University （No. NCET-09-0206） , the Key Project of State Key Lab. of Rail Traffic Control and Safety （No. RCS2008ZZ006） , Program for Changjiang Scholars and Innovative Research Team in University （ No. IRT0949 ） and the Project of State Key Lab. of Rail Traffic Control and Safety （ No. RCS2008ZTO05 ）.

作者：官科[1], Zhong Zhangdui[1], Ai Bo[1], Cesar Briso-Rodriguez[2]

关键词：列车控制系统, 现场测量, 地铁隧道, 数值逼近, 勒让德正交多项式, 基础, 建模, 传播特性, communication based train control systems （CBTC）, measurement, train cross-ing, tunnel, propagation modeling

中文摘要：

Communication based train control systems(CBTC) must work even in the worst situation—train crossing.This paper models the propagation characteristics in one of the most common and pivotal scenarios—train crossing in subway tunnels which is rarely mentioned in previous publications.Firsdy,measurements for train crossing scenario at 2.4 GHz in a real subway line in Madrid have been made.The field measurement is the most reliable way to reveal the propagation characteristics involving shadowing effect and fast fading.Moreover,to precisely describe the fast fading distribution and eliminate the inevitable weak points of traditional fitting way,a best numerical approximation method using Legendre orthogonal polynomials has been proposed.Comparisons show that this method works better and is of greater physical significance.Finally,a complete statistical model is given and all the coefficients can be applied by system designers for the link and system level simulations.

英文摘要：

Communication based train control systems （CBTC） must work even in the worst situation-- train crossing. This paper models the propagation characteristics in one of the most common and piv- otal scenarios--train crossing in subway tunnels which is rarely mentioned in previous publications. Firstly, measurements for train crossing scenario at 2.4 GHz in a real subway line in Madrid have been made. The field measurement is the most reliable way to reveal the propagation characteristics involving shadowing effect and fast fading. Moreover, to precisely describe the fast fading distribu- tion and eliminate the inevitable weak points of traditional fitting way, a best numerical approxima- tion method using Legendre orthogonal polynomials has been proposed. Comparisons show that this method works better and is of greater physical significance. Finally, a complete statistical model is given and all the coefficients can be applied by system designers for the link and system level simu- lations.

同期刊论文项目