摘要： 基于有源射频识别校验的动态定位技术中边界标签的定位精度受制于参考标签数量，针对该问题，提出一种优化测距的改进算法。结合路径损耗模型，分析环境噪声对阅读器收信场强的可信度影响，通过引入加权算子调整定位标签与参考标签之间的欧氏距离，修正各阅读器上的收信场强可信度。仿真结果表明，对于检测区域边界的待定位标签，改进算法比原算法具有更好的定位精度及环境适应性。

关键词: 射频识别, 加权欧式算子, 参考标签, 接收信号强度指示, 定位精度

Abstract: To investigate the location accuracy of Tracking Tags near the Boundary of Detection Area(TTBDA) in Location iDentification based on Dynamic Active RFID Calibration(LANDMARC) being restricted by the number of reference tags, an optimized ranging location algorithm is proposed. By introducing the weighted factor, the algorithm regulates the Euclidean distance between the reference tags and the tracking tags, rectifies the received signal strength indication values’ credibility on each reader on the basis of the distance-loss model. Simulation results show that the proposed algorithm achieves a higher accuracy and better environmental suitability towards Tracking Tags near the Boundary of Detection Area(TTBDA) compared with LANDMARC.

Key words: Radio Frequency Identification(RFID), weighted Euclidean operator, reference tag, Received Signal Strength Indicator(RSSI), location accuracy

中图分类号: 

• TP391.41