Design And Realization Of A Rich- Fingerprint Based Indoor Location Recognition System On Smartphones

With the popularity of mobile computing terminals and the development of location technology, location-based services have attracted more and more attention in recent years. In the indoor positioning technology, WiFi fingerprinting has a high applicability, low cost advantage based on system layout, but the WiFi signal instability and equipment differences led to its accuracy is still not high enough, and can not identify the users are interested in the position of logical meaning. In addition, there are some problems such as low accuracy and the need to establish a large scale image fingerprint database.In the face of these challenges, this paper designs and realizes the design and realization of a rich-fingerprint based indoor location recognition system, by making full use of WiFi, mobile phone image and gets the direction angle of the camera when the target position information rich position fingerprint, then search and location fingerprint database is established, to realize the indoor location identification. In order to make the system has high accuracy and fast response, we design a data acquisition APP, can quickly and efficiently obtain various location fingerprint data required, and can regulate the process of data acquisition, reduce the workload of construction of fingerprint database;secondly, put forward the strategy of visual and no-visual fingerprint matching fingerprint combination the fingerprint, effectively improve the system response speed and accuracy. Finally, the function and performance of the system are verified by the experimental data collected in the shopping mall.The results show that the system can achieve expected results.