Akademik Veri Yönetim Sistemi
WIRELESS PERSONAL COMMUNICATIONS, cilt.125, sa.1, ss.325-350, 2022 (SCI-Expanded)
Autonomous vehicles are going to be used in warehouses or logistic centers more frequently in near future. The location information is vital for autonomous vehicles to accomplish tasks that are assigned to them. This study presents a wireless sensor network to be used in location estimation of autonomous vehicles. The autonomous vehicles estimate their distance to a specific node called as reference anchor node. The aim of the proposed method is to be able get more accurate distance estimations by received signal strength for autonomous vehicles. The proposed wireless sensor network provides sufficient information to the autonomous vehicles to reduce their received signal strength based estimation error. An adaptive filter based algorithm to reduce estimation error is proposed. The performance of the proposed method is validated by simulations and experiments. According to results of the simulations where ideal conditions are provided, maximum error of the proposed method is 0.81m. According to results of the experiments, the average absolute error of the proposed method can be as low as 1.272m. When the proposed method is compared with k-nearest neighbor distance estimation and conventional approach, it has a significantly lower error than them.