Abstract: In view of the problem that the existing RFID based roadmap (LANDMARC) indoor positioning system will lead to the loss of good adjacent reference labels and the introduction of bad reference labels due to external environment factors, a RFID location algorithm based on reference label is proposed. Several reference labels are taken as a whole to compare the value of Receive Signal Strength Indicator (RSSI) to the location label. First, find the area range of the location label, and add some reference labels in this area, and finally determine the position coordinates of the fixed label by adding weight estimation. The experimental results show that the improved algorithm has better stability and anti-interference without increasing the cost of any hardware, and can effectively obtain a good reference label, thus obtaining satisfactory positioning accuracy and positioning performance.
Keywords: Computer application, passive radio frequency identification, location system, landmark algorithm, reference label