基于Android的校园位置服务系统研究与实现

发布时间：2018-06-09 11:29

本文选题：Android + 校园位置服务　；参考：《大连理工大学》2013年硕士论文

【摘要】：随着移动互联网技术的发展和智能移动设备的日益普及,各种移动应用层出不穷,其中基于位置的服务作为新的发展趋势受到了广泛的关注。高校师生作为互联网用户中的活跃群体,也更加广泛地使用智能移动终端来访问网络资源和服务。如何将数字校园的成果移植到移动终端,借助于移动设备为校园用户提供与其自身学习、生活都紧密结合的服务,成为高校信息化建设的重点。校园位置服务作为基于位置的服务在校园环境的具体应用,按照地理位置对数字校园中的信息和服务进行整合,向校园用户提供一种随时随地、方便快捷和可视化的信息服务。我校在完成信息化第一期建设的同时,也完成了无线网络对全部教学区域楼宇的覆盖,适时推出相应的移动应用势在必行。基于以上背景,本文分析、研究了校园位置服务的相关技术,并设计了一个基于Android平台的系统实例。系统的关键是确定用户终端的位置,实现室内外定位。室外采用GPS卫星定位,结合百度地图,进行二次开发,构建本地化地图；室内定位方法、技术众多,在分析比较的基础上,采用基于WiFi信号强度值的位置指纹定位策略,并针对在校园无线网络环境下AP接入点稀疏的实际,对位置指纹定位算法进行了一定的改进。在离线训练阶段,通过对每个采集点进行多次扫描,去除偏差太大的RSSI值,其余值求平均,然后存入位置指纹库；在实时定位阶段,采用初步定位和精确定位相结合的方式,提高了定位的速度和精确度。该系统提供基础服务、校园导航、登录统一身份认证系统和室内位置服务等四项功能,在确定用户位置的基础上,将从公共数据交换平台得到的信息,实时推送到用户终端,方便用户查看。本文同时介绍了系统的客户端和服务端的主要功能模块。最后,对系统进行了测试,满足了设计需求。
[Abstract]:With the development of mobile Internet technology and the increasing popularity of intelligent mobile devices, a variety of mobile applications emerge in endlessly, among which location-based services as a new development trend has been widely concerned. As an active group of Internet users, college teachers and students also more widely use intelligent mobile terminals to access network resources and services. How to transplant the achievements of digital campus to mobile terminals and provide campus users with services closely integrated with their own learning and life with the help of mobile devices has become the focus of information construction in colleges and universities. As a specific application of location-based service in campus environment, campus location service integrates the information and service in digital campus according to geographical location, and provides a convenient, convenient and visual information service for campus users at any time, anywhere and easily. At the same time, we have completed the wireless network coverage of all teaching area buildings. It is imperative to introduce the corresponding mobile application in time. Based on the above background, this paper analyzes, The related technology of campus location service is studied, and a system example based on Android platform is designed. The key of the system is to determine the location of the user terminal and realize the indoor and outdoor positioning. Outdoor GPS satellite positioning, combined with Baidu map, secondary development, construction of localized map; indoor positioning methods, many technologies, on the basis of analysis and comparison, the location fingerprint location strategy based on WiFi signal intensity value, Aiming at the sparse AP access point in campus wireless network, the location fingerprint location algorithm is improved. In the off-line training stage, the RSSI value of too big deviation is removed by scanning each acquisition point several times, and the other values are averaged, and then stored in the position fingerprint database; in the real-time positioning stage, the combination of initial positioning and accurate positioning is adopted. The speed and accuracy of positioning are improved. The system provides four functions: basic service, campus navigation, login and unified identity authentication system and indoor location service. On the basis of determining the user's location, the information obtained from the public data exchange platform is pushed to the user terminal in real time. Easy for users to view. At the same time, this paper introduces the main function modules of the client and server of the system. Finally, the system is tested to meet the design requirements.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN929.5;P228.4

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