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特大城市室内外无缝定位系统研究
作者：刘源 汪云甲 甄杰 修春娣 孙智强 来源：《科技资讯》2016年第02期
摘要：随着网络环境的优化以及移动终端的普及，定位技术在物联网、军事通信以及社交网络方面都有着广泛的应用。各类LBS服务的发展现状既体现了广大人民群众在消费、社交等物质与精神两方面的需求，也是未来经济发展的重要推动力。实现上述LBS服务的前提和基础是准确、快速的对用户所处实时位置进行测定，特别是在人口稠密、高楼密布的城区环境下实现室内外高精度无缝定位。对于室外环境下的定位，全球卫星导航系统（GNSS）作为一种覆盖全球的定位手段已经得到了广泛应用。而对于室内环境，GNSS信号无法工作，无线室内定位技术逐渐成为人们关注的热点。本项目主要分为3个子课题：（1）研制城市区域室内外无缝定位信号体制与导航电文协议。（2）构建特大城市室内外定位系统。（3）研制一套以智能手机、平板电脑等为平台的移动终端三维可视化引擎和导航定位组件，都按照研究计划稳步进行中。 依据项目总体技术需求，本年度开展了基于智能终端的海量三维模型数据管理和线程同步等室内精细三维模型数据调度的研究、三维实体模型辅助下的室内地形匹配与智能路径规划方法探索，以及开发了一套跨平台的智能终端三维可视化引擎系统。首先，室内外无缝定位信号体制研究已经基本完成，包括对各类室内外定位信号系统层级、传感器的界定，对各种无线定位信号特性的研究等。而对于室内定位导航电文格式设计、导航电文标准的顶层设计以及各种传输协议设计都在稳步进行中，并在中国矿业大学区域试验场进行了简单位置传输协议实现。其次，本项目根据构建特大城市室内外定位系统需要解决的信标优化部署、楼层判定、按需射频指纹采集、异构设备聚类与迁移、基于指纹相似性的地理位置聚类以及高精度定位算法等具体技术难点开展研究并提出了相应的解决方案。为了进一步提高定位精度，本项目通过理论研究和实验验证提高提出了混合高斯模型、基于公共信标集的高精度射频指纹定位算法、基于奇异值分解的射频指纹排序定位算法、基于空间相关性滤波和最小余差迭代的NLOS识别定位算法。 最后，为了使室内外定位服务商用化、大众化、公共化，本项目搭建一个基于互联网的公共定位能力服务室内外定位平台。该平台由室内外定位平台、室内外定位门户、能力开放接口、手机客户端SDK等组成，是一个满足内容和应用聚合要求的业务运营管理和业务能力支撑的统一平台。
关键词：室内外定位业务， 切换， 无线网络， 定位系统
Research of the indoor and outdoor seamless positioning system in megalopolis Liu Yuan1 Wang Yun-jia2 Zhen Jie3 Xiu Chun-di4 Sun Zhi-qiang5
1.China Telecom Group Shanghai Telecom； 2.China University of Mining； 3Chinese Academy of Surveying and Mapping； 4.Beijing University of Aeronautics and Astronautics； 5.China Telecom Group Shanghai Telecom Company
龙源期刊网 http://www.qikan.com.cn
Abstract：With the popularity of mobile terminal and the development of network
environment， positioning technology has been widely used in internet of things，military
communications and social networks. Various types of LBS services represent the needs of the masses in the consumption， social contact and other aspects of both material and spiritual， which are also an important driving force for future economic development.For the outdoor environment， global navigation satellite system （GNSS） has been widely used as a means of global coverage
positioning technology. For the indoor environment， GNSS signal is not working effectively and the wireless indoor positioning technology is becoming a focus of attention. Firstly， the indoor and outdoor seamless positioning signal system research has been almost completed， including the definition of all kinds of indoor and outdoor positioning signal systems and sensors， and the study of all kinds of wireless positioning signal characteristics. For indoor positioning navigation message format design， the top design of the navigation message standardand all kinds of transport protocol design arewell under way. Secondly， according to build megacities beacon of indoor positioning system， the project has carried out a study and proposed the corresponding solution based onthese technical difficulties needed to be solved， such as the deployment optimization of beacon， the judgment of floors， on-demand radio fingerprint collection， clustering and migration of the variant equipment， clustering of geographical location of based on the fingerprint similarity and high precision positioning algorithm. In order to further improve the positioning accuracy， this project proposedseveral algorithms， such asthe Gaussian mixture model， the high precision positioning algorithm of the radio fingerprint that based on Public beacon sets and so on. Finally， in order to make indoor and outdoor location services commercial， popular， public， the project builds an indoor and outdoor positioning platform based on the public localization service Internet.The platform consists of the indoor and outdoorpositioning platform， indoor and outdoor positioning portal， the locations of open interface and client SDK of mobile phone，whichis also a unification platform of operation management and business capabilities that could satisfy the requirement of content and application aggregation.
Keywords：Indoor &outdoor LBS， seamless handover， WIFI network，Positioning system 原文阅读链接：http：//www.nstrs.cn/xiangxiBG.aspx？id=65415