Enhancing Positioning Accuracy through Direct Position Estimators Based on Hybrid RSS Data Fusion

M. Laaraiedh, S. Avrillon, B. Uguen
2009 VTC Spring 2009 - IEEE 69th Vehicular Technology Conference  
In this paper, localization based on Received Signal Strength (RSS) is investigated assuming a path loss log normal shadowing model. On the one hand, indirect RSS-based estimation schemes are investigated; these schemes are based on two steps of estimation: estimation of ranges from RSS and then estimation of position using weighted least square approximation. We show that the performances of this type of schemes depend on the used estimator in the first step. We suggest that typical median
more » ... mator must be replaced by maximum likelihood estimator (mode) to enhance the positioning accuracy. On the other hand, a new direct RSS-based estimation scheme of position is proposed; Monte Carlo simulations show that the new estimator performs better than indirect estimators and can be reliable in future hybrid localization systems.
doi:10.1109/vetecs.2009.5073539 dblp:conf/vtc/LaaraiedhAU09 fatcat:4tdqperbzvdqvcpzqoecbaoqsa