Indoor Positioning Technology Research Based On The Android Intelligent Terminal

With the vigorous development of the information technology industry,based on outdoor location services(LBS)greatly facilitate the people's lives.Industrial diversification has led to an increase in the indoor scene of the activities of the people become increasingly large and complex,and in the satellite navigation system is difficult to cover the indoor environment,the demand for location services is increasingly urgent,which makes the "location of the last centimeter"-indoor positioning The major scientific and technological giants and research institutions concerned about the hot spots.Compared with the outdoor environment,the indoor environment is different from the outdoor environment,so the GPS-based outdoor positioning method is difficult to be used indoors.To achieve a high positioning accuracy,low system complexity,low operating costs,universal good indoor positioning technology,is still at this stage of indoor positioning research difficult to overcome the difficulties,therefore,the article launched based on the Android smart terminal indoor positioning Technology research.This paper summarizes the current situation and trend of indoor positioning in China and abroad.In order to study the factors that limit the development of indoor positioning,this paper designs the high precision indoor positioning scheme of Android intelligent terminal and iBeacon combination.The specific research content is reflected in the following aspects: 1)Achieve the pedestrian dead reckoning algorithm(PDR)base on Android smart terminal sensor,in the Android terminal can be the user's real trajectory of reproduction;2)The design of the starting position to estimate the importance of the whole indoor positioning system,this paper designs and realizes the intelligent multi-mode based on iBeacon and two-dimensional code to determine the pedestrian starting position of the program;3)for the PDR algorithm will go with the distance travel distance The experimental results show that the iBeacon / PDR cooperative positioning scheme can effectively reduce the cumulative error of the PDR algorithm,and the system structure of the scheme can be used to reduce the cumulative error of the PDR algorithm.The experimental results show that the iBeacon / PDR cooperative scheme can effectively reduce the cumulative error of the PDR algorithm.Simple and low operating cost.4)The PDR localization and iBeacon localization are integrated by using the extended Kalman filter and the particle filter algorithm respectively.The experimental results show that the two fusion localization techniques are effective in PDR localization and iBeacon localization The advantages of fusion positioning accuracy within 2 meters,significantly higher than the individual PDR positioning and a separate iBeacon positioning,to meet the project technical indicators to meet the needs of indoor positioning.5)the development of indoor positioning APP,and in the APP joined the navigation function,the user after selecting the starting point and the end point,the system will generate a shortest navigation path,based on the path of the guide and path to the user's course constraints,pedestrians More quickly and more accurately reach the destination,and through the experiment to verify the effectiveness of the navigation function.