Research On Floor Identification And Tracking Algorithm Of Indoor Localization System Based On Wireless Network

Satellite positioning system provides location-based services for people in the outdoor area, but it can’t play a role in the indoor area due to the construction’s blocking of signal. Indoor positioning technology based on WLAN fingerprinting can use wireless resources to realize positioning, making up for this shortage, by means of the existing wireless local-area network (WLAN) infrastructures. Due to the advantage of cost, it has become a research hot spot in the field of indoor positioning, recently.In this paper, the study of WLAN positioning technology is mainly on the aspect of floor identification in the vertical direction and tracking algorithm within the two-dimensional plane. In addition, the design and implementation of an asset management system with high-precision positioning is completed in this paper.The thesis focuses on the following aspects:1. Research on WLAN-based floor identification methodThis part analyses the existing methods of positioning in height, and then proposed a WLAN-based floor identification method. Taking into account the increasingly powerful mobile terminal sensor system, the paper further studies the method integrating the acceleration sensor and WLAN information in floor identification.2. Proposed a tracking algorithm integrating the WLAN fingerprinting location result and accelerometer result on the basis of particle filter.Analysis of common filtering technology in indoor positioning field is conducted. A tracking algorithm integrating the WLAN fingerprinting location result and accelerometer result on the basis of particle filter is proposed, which makes location result smooth.3. Design and implementation an asset management system with high-precision positioning on the mobile terminal.Asset management is very important for each enterprise. Providing asset location information will be of great help in asset management. For example it helps to realize resource sharing, information exchange, enabling managers to have a good understanding of the distribution of assets. In this paper, an asset management software is achieved under the project team’s study of indoor positioning technology. It calculated position on the mobile ends.