基于Wi-Fi定位的室内导购系统的设计与实现

发布时间：2018-03-07 01:15

本文选题：基于位置的服务　切入点：Wi-Fi　出处：《东北大学》2014年硕士论文　论文类型：学位论文

【摘要】：移动互联网时代,智能手机已经给人们的生活带来了巨大的影响,用手机处理个人业务已经成为一种趋势。而基于位置的服务(LBS)对人们的生活也越来越重要,如搜索周边生活服务、导航导购路线等等。为了帮助人们在大型建筑里快速准确的找目的地,室内定位导航技术也得到多越来越多的关注。智能手机的LBS服务给人们生活带来便捷的同时,也呈现出广阔的商业前景和巨大的市场价值。本文首先分析了课题背景,结合国内外发展动态指出Android智能手机及室内定位导航技术的发展前景和优势。在介绍了相关技术后,重点介绍了本系统实现所采用的主要算法：在手机客户端使用A*算法规划线路实现点对点的导航功能,并且通过服务器与客户端的通信使用户在客户端所示的地图上找到用户指定的目的地。在定位服务器利用改进基于Wi-Fi的指纹库比对算法实现定位功能,使用二次定位方法以确保在指纹库密度较低的条件下该方法仍然保持较高的定位精度。二次定位方法是一种分段定位方法,首先利用KNN算法进行初定位,然后利用线性插值法生成新指纹库,利用高斯分布重叠进行再定位。关于系统设计和实现部分本系统以大型超市为背景,设计并实现室导购位系统的三个主要功能模块。这三个主要模块包括：室内定位模块、清单导购模块和好友查询模块。同时扩展购物相关的其它功能,提高用户满意度。最后,本文实现了室内导购系统,并对系统各功能模块进行测试分析,证明本系统较好地完成了设计需求,可作为室内导购系统为用户提供服务。
[Abstract]:In the age of mobile Internet, smart phones have brought a huge impact on people's lives. It has become a trend to use mobile phones to handle personal business. LBS-based services are becoming more and more important to people's lives. In order to help people find their destinations quickly and accurately in large buildings, More and more attention has been paid to the technology of indoor positioning and navigation. The LBS service of smart phone brings convenience to people's life, at the same time, it also presents a broad commercial prospect and huge market value. Firstly, this paper analyzes the background of the subject. Combined with the domestic and international developments, the development prospects and advantages of Android smart phone and indoor positioning and navigation technology are pointed out. This paper mainly introduces the main algorithms used in this system: the algorithm A * is used in the mobile phone client to realize the point-to-point navigation function. And through the communication between the server and the client, the user can find the destination designated by the user on the map shown by the client. The location server uses the improved fingerprint database matching algorithm based on Wi-Fi to realize the location function. The secondary location method is used to ensure that the location accuracy is still high when the fingerprint database density is low. The secondary location method is a piecewise localization method. Firstly, the KNN algorithm is used for initial location. Then the new fingerprint database is generated by linear interpolation method, and the location is relocated by using Gao Si distribution overlap. Part of the system design and implementation is based on a large supermarket. Design and implement three main function modules of the system. The three main modules include: indoor positioning module, list guide module and friend inquiry module. At the same time, the other functions related to shopping are extended to improve user satisfaction. In this paper, the indoor shopping guide system is realized, and the test and analysis of each function module of the system are carried out. It is proved that the system has fulfilled the design requirements well and can be used as the indoor shopping guide system to provide service for the users.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN92

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