Research on Indoor Location Algorithm Based on WIFI

Abstract

With the wide application of mobile Internet, location-based service demands are more and more extensive. In the indoor positioning technology, the location fingerprinting method based on WIFI is widely used because of its strong anti-interference ability, high positioning accuracy, long transmission distance and convenient use. The paper adopts the location fingerprint matching and localization algorithm. Firstly, the Gaussian filtering algorithm is applied to process the original data collected by WIFI, and a complete fingerprint database is built off line. Then, the WKNN algorithm is used for position matching to realize indoor position online positioning. The experimental results show that the positioning algorithm used has a significant improvement in positioning accuracy compared with the traditional position fingerprint algorithm.