Abstract: This paper aims to overcome the drawbacks of the traditional object positioning algorithms. For this purpose, passives tags were adopted to position the objects, and the traditional radio frequency identification (RFID) positioning algorithm was optimized based on multi-hop neighbourhood positioning. The optimized algorithm only considers the basic function of the RFID system, excluding the signal transmission strength between the reader and tag. In this way, the positioning cost of the positioning system was significantly reduced, while its robustness and anti-interference property were greatly enhanced. Then, the author analysed the main influencing factors of the algorithm performance, and introduced the system construction and parameter selection. Finally, the simulation results of the optimized algorithm were contrasted with the test results. The comparison shows that the proposed positioning system enjoys high positioning accuracy and resistance to environment disturbances, and applies to the position estimation of moving objects. The research findings open up a new way to RFID positioning.
Keywords: Radio frequency identification devices (RFID), positioning, passive tags, error analysis