震后废墟中Wi-Fi信号场强传输模型研究  

Research on Wi-Fi Signal Field Strength Transmission Model in Post-earthquake

作　　者：何志学 钟晓玲[1] 宋庆艳 陈会丽 李龙[1] 

机构地区：[1]成都理工大学信息科学与技术学院,成都610059

出　　处：《震灾防御技术》2017年第4期997-1004,共8页Technology for Earthquake Disaster Prevention

基　　金："十二五"国家科技支撑计划课题"城镇地震灾害应急处置关键技术研究"(2015BAK18B03);成都理工大学2016中央财政支持地方发展专项"现代信息检测及智能处理技术学科建设";国家自然科学基金面上项目"分布式超宽带雷达地震被困人员协同探测技术研究"(41574136)

摘　　要：针对震后废墟中无法精确检测出电磁波的传输特性问题,本文提出了一种在震后废墟中Wi-Fi信号场强的检测方法。首先是对Wi-Fi信号场强在组成震后废墟主要介质中的传输特性进行检测推导。然后通过测量在废墟不同距离下场强的大小,即可推导出废墟下电磁波的场强与传输距离的关系,最后得出场强在震后废墟中的传输模型。实验表明,该传输模型的计算结果准确度高,对震后废墟中电磁波传输特性的检测具有重要意义。Aiming at the problem that the electromagnetic wave transmission characteristics can not be detected accurately in the ruins of the earthquake, this paper presents a method to detect the field strength of the Wi-Fi signal in the ruins after earthquake. Firstly, the transmission characteristics of the Wi-Fi signal field strength of the main components of the inhomogeneous medium is obtained. Then, by measuring the magnitude of the field strength at different distances in the inhomogeneous medium, the relationship between the transmission distance and the electromagnetic wave in the inhomogeneous medium can be deduced. Finally, we can develop the transmission model of the field strength in the inhomogeneous medium. The experiments show that the calculated results of the transmission model are of high accuracy. It is greatly significant for the detection of electromagnetic wave transmission characteristics in the ruins of the earthquake.

关 键 词：传输特性 场强 地震救援 非均匀介质 WI-FI 

分 类 号：P315.9[天文地球—地震学]