Wi-Fi RTT-based active monopulse RADAR for single access point localization

Jose Antonio Lopez-Pastor, Pedro Arques-Lara, Juan Jose Franco-Penaranda, Antonio Javier Garcia-Sanchez, Jose Luis Gomez-Tornero
2021 IEEE Access  
The purpose of this work is to implement a novel active radar system for single access point two-dimensional localization system based on 802.11 wireless local-area networks (WLAN). The active radar employes the 802.11 Fine Time Measurement (FTM) Round Trip Time (RTT) as specified in the 2016 update of WIFI Standard to calculate the ranging distance and acquires two channels of Received Signal Strength Indicator (RSSI) to estimate the azimuthal angle. In this way, real-time two-dimensional
more » ... ization of Wi-Fi RTT-compatible mobile Internet of Things devices is demonstrated using a single access point operating in the 2.4GHz band. The experimental results performed in anechoic chamber and in a real environment point up a mean positioning error below one meter within a Field of View (FoV) of 60 • and distances up to 14 meters, with an acquisition time below 0.5 seconds. INDEX TERMS Localization with 802.11, active Wi-Fi radar, round trip time (RTT), angle of arrival (AoA), amplitude monopulse radar.
doi:10.1109/access.2021.3062085 fatcat:dn5zz7fpz5d7ddlqiz2wsroypy