融合GPS与Wi-Fi的室内外无缝定位原型系统研制  

Development of Indoor/Outdoor Seamless Positioning Prototype System Fusing GPS and Wi-Fi

作　　者：胡旭科[1,2] 尚建嘎[1,2] 古富强[1,2] 余芳文[1,2] 葛彬[1,2] 郭傲[1,2] 

机构地区：[1]中国地质大学信息工程学院,武汉430074 [2]国家地理信息系统工程技术研究中心,武汉430074

出　　处：《小型微型计算机系统》2014年第2期428-432,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(41271440)资助;"十二五"国家科技支撑计划项目(2012BAJ11B00)资助;国家自然科学青年基金项目(41002115)资助

摘　　要：针对无缝定位应用需求和亟待解决的关键技术问题,对多定位技术融合方案进行了比较性研究,结果显示,GPS与Wi-Fi的融合可以提供更好的综合性能.设计了一种室内外定位技术、定位方法自动切换策略,以提供连续的定位服务;引入alpha-count方法,提高定位切换的平滑性和可靠性.构建了一个融合GPS与Wi-Fi的室内外无缝定位原型系统UL mobile.实验结果表明,UL mobile能够初步满足室内外无缝定位应用的需求.According to the application requirements of seamless positioning and the key technical problems need to be solved, a com- parative study of multi-positioning technologies fusion solutions is presented firstly. As revealed by this benchmark, a combination of GPS and WLAN is shown to provide more excellent comprehensive performance. Next, to provide a continuous positioning service, we design a strategy to switch automatically between indoor/outdoor positioning technologies and methods. To eliminate the fluctua- tion that appeared in the process of switching and improve the reliability, alpha-count method is introduced. Finally, we develop an in- door/outdoor seamless positioning prototype system, UL mobile, fusing GPS and Wi-Fi. Experiments show that UL mobile can pre- liminarily meet the needs of indoor/outdoor seamless positioning application.

关 键 词：室内 室外 无缝 定位 GPS WI-FI 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]