摘要
为精确地描述梯形巷道近场区传播特性,利用传播理论与空间立体几何,建立近场区自由空间传播机制与多模波导传播机制分界点的近似数学模型,推导出了收发天线安装在不同位置时分界点位置的计算公式;并讨论了天线安装位置、巷道高度对分界点的影响。
In order to describe the propagation characteristics of the near-region in trapezoid tunnel accurately, propagation theory and three-dimensional geometry will be used to establish a approximate mathematical model of the division point between free-space propagation mechanism and multimode waveguide propagation mechanism in near-region. Expression of the division point with receiving antenna installed at different positions can be deduced. Influence of antennas' special location and tunnel's height on the division point will be discussed in details.
出处
《煤炭技术》
CAS
北大核心
2015年第9期331-332,共2页
Coal Technology
基金
国家自然科学基金(51244003)
河南省矿山信息化重点学科开放实验室开放基金(KZ2012-01)
关键词
梯形巷道
近场区
多模波导
分界点
trapezoid tunnel
near-region
multimode waveguide
division point
