轨道交通单竖井隧道环境的空气湍流折射率结构常数模型及分析

赵恒凯; 付新涛

doi:10.11999/JEIT160632

轨道交通单竖井隧道环境的空气湍流折射率结构常数模型及分析

doi: 10.11999/JEIT160632

赵恒凯¹,
付新涛²

2.
(上海大学通信与信息工程学院上海 200444) ②(上海大学特种光纤与光接入网省部共建重点实验室上海 200072)

基金项目:

国家自然科学基金(61271061, 61132003)

计量
- 文章访问数: 1252
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- 被引次数: 0
出版历程
- 收稿日期: 2016-06-15
- 修回日期: 2016-12-15
- 刊出日期: 2017-04-19

Model and Analysis of Atmospheric Turbulence Index Structure Parameter in the Single-shaft Tunnel of Rail Transit Environment

ZHAO Hengkai¹,
FU Xintao²

Funds:

The National Natural Science Foundation of China (61271061, 61132003)

摘要

摘要: 空气湍流的变化影响微波的传输。为了研究轨道交通隧道环境下空气湍流对微波传输的影响，该文结合活塞风的运动特性以及大气折射率结构常数的计算方法，建模隧道环境温度、隧道长度、阻塞比、活塞风速等参数对折射率结构常数的影响，构建轨道交通单竖井隧道环境下的空气湍流折射率结构常数模型；基于实际隧道温度场景，分析了轨道交通隧道环境下折射率结构常数的分布规律，比较了列车经过有单竖井和无单竖井的隧道时，空气湍流折射率结构常数的变化。该模型为研究轨道交通隧道环境中电波折射率结构常数提供理论参考。
- 空气湍流 /
- 微波 /
- 折射率结构常数 /
- 单竖井隧道 /
- 活塞风
Abstract: The change of the atmospheric turbulence affects the transmission of microwave. In order to study the impact of turbulence on the microwave transmission in rail transit tunnel environment, this paper combines the motion characteristics of the piston wind with the calculation method of atmospheric refractive index structure parameter. With investigation into the influences of tunnel environmental temperature, length of tunnel, blockage ratio, and piston wind speed on the atmospheric refractive index structure parameter, an atmospheric refractive index structure parameter model is established in the single-shaft rail transit tunnel environment. In this paper, the distribution of the atmospheric refractive index structure constant in rail transit tunnel environment is analyzed, and the change of atmospheric turbulence refractive index structure parameter in case of the train through the single-shaft tunnel with that of no single-shaft tunnel is compared based on the actual tunnel temperature scene. The model provides a theoretical reference for the study of radio refractive index structure constant in rail transit tunnel environment.
- Atmospheric turbulence /
- Microwave /
- Refractive index structure constant /
- Single-shaft tunnel /
- Piston wind

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