Location Fingerprint-based Indoor Locating System Of Government Affairs Service Center

In recent years, with the rapid development of Internet technology and the popularity of mobile devices, location-based services more and more into people's lives. Compared with outdoor positioning technology such as global positioning system, indoor positioning technology has experienced a period of development, although the positioning method of diversification and accuracy of positioning accuracy has made significant progress, but its scope of application is still further expansion Space. The purpose of this paper is to explore the application of indoor location technology in the government service places, especially for the large flow of people in the government service center, and the instability of the wireless signal, the traditional indoor location algorithm is improved, A Location Fingerprint-based Indoor Locating System is implemented to provide more efficient and convenient window location guidance service for the service people.This paper focuses on the following aspects:(1) Based on the basic principle and positioning procedure of location fingerprint location, the paper analyzes the common location fingerprint data processing method and location fingerprint location algorithm, and compares their advantages and disadvantages. The influence of multipath propagation, environment facilities, equipment and other factors on the wireless signal strength is verified by experiment.(2) An improved weighted KNN algorithm based on the fluctuation range of AP signal is designed to solve the problem that the traditional positioning algorithm is not sufficient in the indoor environment with large human traffic. The stability of the algorithm is tested in different environments analysis. Experiments show that the proposed algorithm has a 14% to 18% improvement in positioning accuracy compared with the conventional weighted KNN algorithm in a large indoor environment.(3) Design and implementation of a positioning system based on location fingerprint technology of government service center indoor prototype system. Mainly includes the following four aspects:1) Feasibility analysis and functional requirement analysis of the system2) The overall design of the system3) server and client functions to achieve4) system function test...