基于多源信息融合的移动定位优化技术研究

发布时间：2018-11-26 18:51

【摘要】：基于位置的服务(LBS),伴随着移动互联网而产生。自诞生以来,迅速深入人们生活的方方面面。签到、地图、周边生活服务的搜索等应用层出不穷,而这一切的基础就是精准定位技术。目前,室内定位研究最多的就是基于射频或者传感器的定位,室外定位主要以GPS定位为主。但是,这些定位技术都是局限于一个特定环境或者范围,如何在综合多源定位信息的基础上,寻求一种较普适性的定位技术,是一个非常值得研究的热门课题。本文在当前室内外定位的基础上,提出了基于多源信息融合的移动定位技术。即通过卡尔曼滤波技术,将GPS定位信息、惯性传感器定位信息、基站定位信息和道路信息进行融合,融合的条件是实时检测GPS信号是否发生漂移和时间戳原则。该优化算法,首先,一定程度上缓解了惯性传感器定位的累积误差,使得惯性传感器更好的发挥其自主导航能力；其次,能有效解决GPS漂移,在没有网络或者GPS信号弱的环境(如深山,隧道、楼区等)下,也能做到一定程度的定位；最后,初步实现了室内、室外的无缝切换,也降低了GPS长时间定位耗能问题。本文提出的移动定位技术,通过了实验测试,达到了上述目标,说明本文的设计思想和理念是可行的。
[Abstract]:The location-based service (LBS), comes along with the mobile internet. Since its birth, it has rapidly penetrated into all aspects of people's lives. Applications such as check-in, maps, and search for peripheral life services are endless, and all are based on precision positioning technology. At present, indoor positioning research is based on RF or sensor positioning, outdoor positioning is mainly based on GPS. However, these localization techniques are confined to a specific environment or scope. How to find a more general location technology based on the synthesis of multi-source location information is a hot topic worth studying. In this paper, based on the current indoor and outdoor positioning, a mobile location technology based on multi-source information fusion is proposed. That is, through Kalman filtering technology, GPS location information, inertial sensor location information, base station location information and road information are fused. The condition of fusion is real-time detection of GPS signal drift and timestamp principle. The optimization algorithm, firstly, alleviates the cumulative error of inertial sensor positioning to a certain extent, and makes inertial sensor better play its autonomous navigation ability; Secondly, can effectively solve the GPS drift, in the absence of network or GPS signal weak environment (such as mountains, tunnels, buildings, etc.), can also achieve a certain degree of positioning; Finally, the seamless switching between indoor and outdoor is realized preliminarily, and the problem of energy consumption for long time positioning of GPS is also reduced. The mobile positioning technology proposed in this paper has passed the experimental test and achieved the above goal, which shows that the design idea and idea of this paper are feasible.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN929.5;P228.4

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