矩形巷道电磁波传播混合模型分界点的研究  

Research on Division Point of Radio Wave Propagation Hybrid Model in Rectangular Tunnel

作　　者：成凌飞[1] 曾文[2] 史亚军[2] 

机构地区：[1]河南理工大学物理与电子信息学院,河南焦作454000 [2]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《测控技术》2017年第1期116-119,共4页Measurement & Control Technology

基　　金：国家自然科学基金项目(51244003);河南省高等学校矿山信息化重点学科开放实验室开放基金(Kz2012-01)

摘　　要：为了更精确地描述矩形巷道电磁波传播近场区的传播特性,运用两路径模型结合Fresnel区域理论,推导了巷道近场区第一分界点距离的公式;在分界点之前,传播损耗遵循自由空间传播特性,而在分界点之后,可用多模波导传播模型预测。通过3组实测结果来验证该模型在天线不同位置、不同载波频率下的合理性,所得结论将会加深对巷道环境中电磁波传播机制的深刻理解。In order to describe the radio wave propagation characteristics of the near-region in rectangular tun- nel more accurately, two-ray model and the Fresnel zone theory are used to deduce the distance expression of the first division point. The free space propagation model can be used to predict propagation loss, while the multi-mode waveguide propagation model offers excellent prediction loss after the division point. Three groups of measurements are employed to verify the rationality of the model with receiving antenna installed at different positions and at different frequencies. The conclusion could help to deepen the insight into the propagation mechanism within tunnel environments.

关 键 词：矩形巷道 两路径模型 Fresnel区 第一分界点 

分 类 号：TN929.4[电子电信—通信与信息系统]