基于WiFi-蓝牙混合定位技术的震后压埋人员手机定位方法  

Mobile phone positioning method for buried personnel after earthquake based on WiFi-Bluetooth hybrid positioning technology

作　　者：彭伟豪 肖东升[1,2,3] PENG Weihao;XIAO Dongsheng(School of Civil Engineering and Geomatics,Southwest Petroleum University,Chengdu 610500,China;Geomatics Remote Sensing Geographic Information Disaster Prevention and Emergency Research Center,Southwest Petroleum University,Chengdu 610500,China;Institute of Care-Life,Chengdu 610041,China)

机构地区：[1]西南石油大学土木工程与测绘学院,四川成都610500 [2]西南石油大学测绘遥感地理信息防灾应急研究中心,四川成都610500 [3]成都高新减灾研究所,四川成都610041

出　　处：《自然灾害学报》2023年第2期16-25,共10页Journal of Natural Disasters

基　　金：国家自然科学基金项目(51774250);四川省科技计划项目(2019JDR0112);西南石油大学测绘遥感地信与防灾应急青年科技创新团队(2019CXTD07);四川省科技创新苗子工程项目(2020046);四川省区域创新合作项目(23QYCX0053)。

摘　　要：我国地震灾害频发,快速确定压埋人员的准确位置成为震后救援工作的一大难点。文中提出的基于WiFi-蓝牙混合定位技术的震后压埋人员手机定位方法,通过在模拟的震后压埋环境周边分别部署WiFi探针和蓝牙网关,采集压埋人员携带的智能设备发射的信号接收强度(received signal strength indication, RSSI)数据,利用高斯-卡尔曼混合滤波对RSSI数据进行预处理,建立基于震后压埋环境的无线信号距离损耗模型,采用改进的加权质心定位算法解算压埋智能设备的坐标,通过评估WiFi和蓝牙定位结果可信度确定最终的定位结果。实验结果表明:单一的WiFi定位技术和蓝牙定位技术的平均定位精度分别为0.917、0.867 m,而WiFi-蓝牙混合定位技术的定位精度为0.541 m,相对于单一的WiFi和蓝牙定位技术,定位精度分别提高了41%和37.6%。Earthquake disasters occur frequently in China,and it is a difficult point to quickly determine the exact location of buried people.In this paper,a mobile phone positioning method for buried personnel after earthquake based on WiFi-Bluetooth hybrid positioning technology is proposed.Received signal strength indication(RSSI)data transmitted by smart devices carried by buried personnel is collected by deploying WiFi probes and Bluetooth gateways around the simulated post-earthquake burial environment.RSSI data is preprocessed using Gaussian-Kalman hybrid filtering,and the wireless signal distance loss model is established based on post-earthquake buried environment.The improved weighted centroid positioning algorithm is used to solve the coordinates of the buried smart device,and the final positioning result is determined by evaluating the reliability of the WiFi and Bluetooth positioning results.The experimental results show that the average positioning accuracy of the single WiFi positioning technology and the Bluetooth positioning technology is 0.917 m and 0.867 m respectively,while the positioning accuracy of the WiFi-Bluetooth hybrid positioning technology is 0.541 m.Compared with the single WiFi and Bluetooth positioning technology,the positioning accuracy is improved by 41%and 37.6%respectively.

关 键 词：地震救援 高斯-卡尔曼混合滤波 加权质心定位算法 混合定位 可信度评估 

分 类 号：X43[环境科学与工程—灾害防治] TN98[电子电信—信息与通信工程] TN713.7[天文地球—地震学] P315[天文地球—固体地球物理学]