工矿自动化2012，Vol.38Issue(8)：36-40,5.
煤矿井巷无线信道相干带宽的计算
Calculation of Coherence Bandwidth of Mine Wireless Channel
摘要
Abstract
Based on the multimode theory and ray theory of electromagnetic wave propagation in coal mine tunnels, the paper established a wireless channel model of wireless signal in mine tunnels, deduced formula of coherence bandwidth of wireless channel considered to important parameters influenced by the coherence bandwidth, such as propagation distance, tunnel section size, carrier frequency, antenna polarization, antenna location, medium electrical parameters. It simulated influence of the above parameters on the coherence bandwidth in a rectangular tunnel with width 4 m, height 3 m, and obtained theoretical results that the coherence bandwidth of the mine channel is proportional to the frequency, inverse proportional to propagation distance, the tunnel section size and the relative medium electrical parameters, to change position of antenna in the rectangular section tunnel is less influenced on coherence bandwidth.关键词
矿井巷道/无线通信/电磁波传播/信道模型/相干带宽/巷道截面/相对介电常数Key words
mine tunnel, wireless communication, electromagnetic wave propagation, channel model, coherence bandwidth, tunnel section, relative medium electrical parameter分类
矿业与冶金引用本文复制引用
崔洁,徐钊,霍羽..煤矿井巷无线信道相干带宽的计算[J].工矿自动化,2012,38(8):36-40,5.基金项目
中央高校基本科研业务费专项资金资助(JX111744) （JX111744）
