WiMag: Multimode Fusion Localization System based on Magnetic/WiFi/PDR

Abstract

With the rapid increase of location based services, various indoor positioning technologies have emerged. The existing indoor positioning technologies have different characteristics in localization accuracy, real-time performance, coverage and cost. To meet the requirements of high accuracy, low cost, and broad coverage in complex indoor scenes, we design an indoor localization system WiMag: Multimode Fusion Localization System based on Magnetic/WiFi/PDR. Based on the particle filter framework, the system optimally selects the fusion strategy to combine the location results according to the identified smartphone status. The experimental results demonstrate that the proposed WiMag outperforms all single indoor positioning technologies with higher accuracy (1.6m average localization error), wider localization coverage and better robustness.