EFFICIENT GEO-LOCATION SYSTEM USING 2-D MUSIC ALGORITHM FOR SOCIAL SAFETY ROBOT

摘要

In this paper, we propose an efficient two dimensional geo-location system for social safety robot, where the location is obtained by direction of arrival (DOA) and time of arrival (TOA) of the radio signal. The proposed system requires one reference signal while the conventional systems generally demand more than three reference signals. For estimating TOA and DOA information simultaneously, we employ a two-dimensional multiple signal classification (2-D MUSIC) algorithm. The simulation results show that the proposed geolocation system achieves the positioning accuracy within 3 meters error in 2 kilo-meters coverage which is constraint for mobile social safety robot.