RFID-Based WIMEC-LANDMARC Indoor Location Algorithm

摘要

In view of the low positioning accuracy caused by the multi-path effect of Location Identification Based on Dynamic Active RFID Calibration(LANDMARC) system and the existing factors that affects the stability of the system, an RFID-Based LANDMARC indoor positioning optimization algorithm, namely Weigth Improverment and Mean Error Correction(WIMEC-LANDMARC), is proposed. The accuracy of the positioning system is improved by means of the average error correction, that is, the LANDMARC algorithm is adopted to locate the neighbor reference tags, and the average error is obtained to correct the initial position of the target to be measured and reduce the error of the positioning result. By improving the formula of reference tags' weight, the system outliers are eliminated and the stability of the positioning system is improved when Euclidean distance is zero. The experimental results show that the WIMEC-LAND MARC algorithm can effectively reduce the error of the target to be measured and eliminate the outliers, thus achieving the effect of improving the accuracy and stability of LANDMARC indoor positioning algorithm.