基于WLAN Probe Request帧的跨平台室内感知定位方法

发布时间：2018-11-21 16:31

【摘要】：越来越多的运营商和商家部署WLAN(主要是WiFi),加之LBS服务的商业模式日渐清晰,WiFi定位已成为当前主流的室内定位技术。而现有WLAN定位技术需要连接WiFi网络,才能实现定位,且需要预先安装定位软件,不能跨平台,这无疑增加了定位的繁琐程度。这在用户无法参与定位时(如火灾被困、矿难被困等),会造成无法估量的后果。因此,研究免WiFi连接、无需安装软件、无需用户参与、跨平台的室内定位方法,便成为亟待解决的难点问题。针对商场、地下停车场等布局复杂的室内环境,本文提出了一种基于WLAN Probe Request帧的感知定位方法:通过监测WLAN覆盖范围内设备间传输的Probe Request帧,实现了无需连接WiFi定位,在此基础上,利用Web技术和分布式技术,实现了无需安装定位软件,跨平台定位的目标。本论文的主要研究工作如下:(1)本文论述了 WLANProbe Request帧作为室内定位指标的定位方法及其可行性,通过对WLAN Probe Request帧的监测和捕获,保证了定位元数据的获取实时性,实现了设备无需安装感知软件实现定位的目标。(2)本文构建了基于三边定位算法的位置解算系统,并部署于云端,实现了设备无需安装位置解算软件实现定位的目的。位置解算过程在云端进行,无需用户安装位置解算软件,定位结果通过网络传输给用户。(3)本文利用Web技术和响应式方案,将定位系统进行了分层解耦,最终形成了待定位设备无需连接WiFi、无需安装软件,且跨平台的定位方案。定位过程无需用户参与,可用于定位与导航,还可以用于被动监测。(4)集成上述研究成果,研发了基于WLAN探测帧的跨平台室内感知定位原型系统。选择了典型室内区域,从帧捕获和解析、定位精度分析、应用场景、定位设备无关性等方面,开展实验与分析。实验结果表明:利用本文定位方法,无需连接WiFi即可实现定位,且设备无需安装定位软件,具备跨平台特性,既可用于定位导航,也可用于局部区域人员监测。
[Abstract]:More and more operators and merchants deploy WLAN (mainly WiFi), and LBS service business model is clear day by day) WiFi positioning has become the mainstream indoor positioning technology. The existing WLAN positioning technology needs to connect to the WiFi network to achieve positioning, and need to install positioning software in advance, can not cross the platform, which no doubt increased the tedious degree of positioning. This can have incalculable consequences when the user is unable to participate in the location (e.g., trapped in a fire, trapped in a mine, etc.). Therefore, it is a difficult problem to solve the problem of WiFi free connection, no software installation, no user participation and cross-platform indoor positioning method. In view of the complex indoor environment such as shopping malls and underground parking lots, this paper proposes a perceptual localization method based on WLAN Probe Request frames: by monitoring the Probe Request frames transmitted between devices within the coverage of WLAN, the location of WiFi without connection is realized. On this basis, using Web technology and distributed technology, the goal of cross-platform positioning without installing localization software is realized. The main research work of this paper is as follows: (1) this paper discusses the localization method and feasibility of WLANProbe Request frame as indoor positioning index. By monitoring and capturing WLAN Probe Request frame, the real-time acquisition of location metadata is ensured. The goal of location is realized without installing perceptual software. (2) in this paper, a location resolution system based on trilateral location algorithm is constructed and deployed in the cloud, which realizes the purpose of location without installation of location software. The location calculation process is carried out in the cloud, and the location result is transmitted to the user through the network without the need to install the location solution software. (3) in this paper, the location system is decoupled by using Web technology and response scheme. Finally, a cross-platform positioning scheme is formed, which does not need to be connected to WiFi, and does not need to install software. The localization process can be used for positioning and navigation without user participation. (4) integrating the above research results, a cross-platform indoor sensing positioning prototype system based on WLAN detection frame is developed. The typical indoor area is selected to carry out experiments and analysis from the aspects of frame capture and analysis, positioning accuracy analysis, application scene, location equipment independence and so on. The experimental results show that the location can be realized by using this method without connecting WiFi, and the equipment does not need to install localization software, and it has cross-platform characteristics, which can be used for location navigation as well as local area personnel monitoring.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN925.93

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