基于WiFi的指纹定位技术的研究.docxVIP

???南京师范大学泰州学院?毕 业 论 文?题 目基于WiFi的指纹定位技术的研究?学生姓名XX学业通信工程班级信1003指导教师XX? 2014 年 4 月基于WiFi的指纹定位技术的研究摘 ?要随着移动通信、无线网络技术的突飞猛进，人们对获取位置服务的需求也日益增加，这使得基于位置感知的计算与服务在现实生活中发挥的作用越来越重要。目前全球定位系统GPS是获取室外环境位置信息是最常用方式。但由于卫星信号容易受到各种障碍物遮挡，因此卫星定位技术并不适用于室内或者高楼林立的场合，因此无线室内定位技术的迅速发展已成为GPS的有力补充。WIFI位置指纹定位技术是基于接收信号传播特性而进行定位的，与传统室内定位技术相比，其扩展性更强、应用范围更广。由于WIFI信号传输时受非视距、多径衰落等因素影响较小，故基于WIFI网络的指纹定位系统稳定性较强，而基于红外或视频信号定位技术在使用时较易受限，比如：在阳光直射或荧光照射下基于红外技术定位的精度将大大降低，而基于视频信号的定位技术使用前提是移动终端必须在可视条件下。因此，研究基于WiFi指纹定位技术具有非常重要的意义。本文首先从课题的研究背景，国内外的必威体育精装版研究状况及课题的研究意义等方面分析WIFI位置指纹定位技术的大概内容，从第二章到第四章全面分析了指纹定位的核心技术。关键词：WIFI位置指纹定位The research of fingerprint based on WiFi positioning technologyAbstractWith the rapid development of mobile communications, wireless network technology, people are increasing demand for access to the location service, which makes the location-aware computing and services play a role in real life more and more important.Current GPS global positioning system (GPS) is to obtain the outdoor environment location information is the most commonly used.But as a result of the satellite signal is vulnerable to all sorts of obstacles block, so the satellite positioning technology does not apply to indoor or high-rise buildings, so the rapid development of wireless indoor positioning technology has become a powerful supplement of GPS.WIFI location fingerprinting positioning technology is based on the received signal propagation and to locate, compared with the traditional indoor positioning technology, its extensibility and wider application range.Because the WIFI signal transmission when affected by factors such as non line-of-sight, multipath fading is small, so the fingerprint positioning system based on WIFI network stability strong, and positioning technology based on infrared or video signal when use limited more easily, such as: based on infrared technology under direct sunlight or fluorescent light positioning accuracy will be greatly reduced, and based on video signal using the premise