An Application of RFID Localization in Lane Recognition for Vehicles

Due to the surge in the number of vehicles throughout the world, traffic problems become increasingly severe. Thus, the implementation of lane recognition plays an important role in Intelligent Transportation Systems (ITS). In this paper, we present a RFID based positioning approach for lane recognition which is also practical for scenarios like tunnels or multilayer viaduct where GPS is not available now. As Phase Difference of Arrival is the essential information for localization, two UHF RFID phase extraction schemes have been discussed. Experimental results show that both of the two schemes can achieve an error recognition rate under 6.0 %. The sub-sampling scheme has a better performance than Zero-IF Receiver at the expense of system complexity.