In recent years, the RFID is widely used in indoor positioning fields. The existing positioning systems using the RFID technology have some problems in the aspects of the location accuracy, the efficiency, the reliability, the cost and others. A distributed multiple antenna array reader positioning system can achieve a fast and accurate positioning according to the signal intensity and the phase difference detected by receiving antennas. The local identification code can simplify the identification process and achieve a high-speed identification of target tags and meet the requirements of the fast moving object positioning. Compared with the traditional positioning method, the proposed algorithm has prominent advantages in the positioning speed, the positioning accuracy and the anti-interference ability.

radio frequency identification  /  multiple antenna reader  /  distributed  /  fast-moving object identification  /  positioning system