The Research Of Acurate Indoors Positioning Technology Based On IBeacon

In recent years,Location Based Service(LBS)has got into the rapid development stage.From the 1994 GPS global positioning system construction completed,countries around the world have developed new satellite navigation systems successively.For example,GLONASS,Galileo,IRNSS,Beidou and other positioning systems have been put into commercial use.The satellite navigation as the leading outdoor positioning technology has gradually improved and developed so far.But the satellite navigation system is not well adapted to the indoor environment.Due to the changeable and complex environment of indoors and structure of the buildings from a large extent are very inappropriate to the electromagnetic signals that rely on the outdoor positioning navigation technology,which makes quite a long period of time the problem of indoor positioning research has been in a lag phase.There are no better solutions for indoor positioning problems.However,with low power Bluetooth core specification released in 2010,it was depend on the positioning of the beacon equipment to enhance the performance of the epoch-making significance.So the new high-precision indoor positioning solution research enters a new stage.The research is focuses on the current relatively popular low-power Bluetooth technical specifications,especially the iBeacon specification derived from low-power Bluetooth technology.It is combined with improved positioning and ranging algorithm.And finally the research proposes a new indoor precise positioning solution.The research first analyzed the status quo of various positioning technology research,including the mainstream of indoor positioning technology and various ranging positioning algorithm.Based on this,the shadow fading model of RSSI localization algorithm and the parameter design of maximum likelihood ranging method were improved for following research.And then the research focused on the subject of positioning system to achieve the various key algorithms,combined with ibeacon Bluetooth technology,and put forward a high-precision indoor positioning solutions.In the system joint algorithm design and implementation part,it’s decided to develop the app on Android OS in research.At the same time,it also analyzed the technical characteristics of the platform software development and the problems that need to be solved on the localization algorithm,proposed a number of Android system in the development and positioning of application technology optimization methods,including the operation of the system on the Bluetooth protocol stack and Bluetooth device interaction and how to efficiently implement the core positioning algorithm.Finally,based on the principle of minimum cost,the auther developed a mobile phone software to meet the experimental needs for experimental testing.Through the analysis of the experiment and the final test data,the feasibility and availability of the indoor precise positioning theory were fully verified.