Indoor localization methods based on Wi-Fi lateration and signal strength data collection

The paper describes two Wi-Fi lateration methods based on signal propagation model and signal strength data collection for indoor localization using Android-based mobile device. The considered methods use log-normal path loss model for signal propagation and received signal strength measurement collection for distance estimation and lateration approach for localization. The indoor signal propagation problem is resolved by received signal strength measuring and special ring radio map building those improve localization accuracy. Indoor localization technique opens possibilities for development various intelligent systems that provide the user location-based information inside buildings.