Research On Indoor Location Algorithm Based On BLE

With more new capabilities of mobile devices continues to improve,demand for positioning technology,positioning technology and expanding more and more widely used in people's lives,it can provide convenient and intelligent service for the people.At present,the positioning technology has become increasingly mature,such as Google positioning services,Baidu maps,etc.,these applications are based on GPS technology development,and positioning accuracy has been very high.However,in indoor environment,the positioning accuracy of GPS signals is greatly reduced due to the shielding effect of buildings.The current positioning technology is difficult to guarantee the reliability of signal transmission in dynamic environment.On the other hand,from the analysis of extended coverage angle positioning technology relies on positioning database,when positioning in large regions of the location fingerprint database collection requires a lot of manpower and material resources.From the point of view of user experience,the positioning technology required is low power consumption without additional cost.The indoor positioning algorithm study of this topic is the Bluetooth technology and the location of the fingerprint database based on low power consumption synchronous update technique which combines the existing algorithms for indoor positioning has been improved,the main research contents are as follows:(1)The traditional indoor location algorithms of KNN and WKNN are investigated and analyzed,and the characteristics and shortcomings of these algorithms are described.(2)This paper analyzes and studies the low power Bluetooth technology,the existing algorithm of positioning error,positioning problem of unstable data transmission put forward an BLE based localization algorithm effectively improves the positioning accuracy and stability of data transmission and the algorithm should be to the field of indoor positioning.(3)This paper also proposed a method to update the location fingerprint database,combined with the idea of crowdsourcing,can automatically update the dynamic database maintenance,to solve the traditional indoor location database is not updated in a timely manner to the problem of inaccurate positioning.