煤矿巷道壁粗糙度对电磁波传播的影响

基金项目:

中国矿业大学高水平学术论文专项基金项目（2012LWB75）

详细信息

Influence of wall roughness on electromagnetic wave propagation in coal mine tunnels

School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221008, China

摘要: 根据多波模传输理论推导出多波模综合作用下因巷道壁粗糙度引起的电磁波衰减计算公式，并采用多波模模型仿真分析巷道壁粗糙度对电磁波衰减特性的影响。Matlab仿真结果表明，巷道壁粗糙度对电磁波衰减特性的影响随频率升高而增大，由于波导效应和巷道壁粗糙度的共同作用，煤矿井巷电波传播存在一个0.4～2 GHz的低衰减频段。
- 煤矿巷道 /
- 巷道壁粗糙度 /
- 电波传播 /
- 多波模模型 /
- 低衰减频段
Abstract: The paper deduced formula of electromagnetic wave attenuation caused by wall roughness under combined effects of multi wave mode according to transmission theory of multi wave mode, and simulated and analyzed effect of wall roughness on attenuation characteristics of electromagnetic wave by multi mode model. Matlab simulation results show that influence of wall roughness on attenuation characteristic increases with frequency. Due to combined effects of waveguide and wall roughness, there is a frequency range with low attenuation of 0.4-2 GHz in wave propagation in coal mine tunnels.
- coal mine tunnel /
- wall roughness /
- wave propagation /
- multi wave mode model /
- low attenuation frequency range