基于多天线到达相位差的室内定位算法

Indoor positioning algorithm based on multi-antenna PDOA

摘要:

针对测距式射频识别(RFID)室内定位算法的精确度会受到测距误差严重影响的问题，提出一种基于多天线到达相位差(M-PDOA)的室内定位算法。通过M-PDOA测距方法进行测距，采用三边测量算法对目标标签进行定位。仿真结果显示，本算法的测距平均误差为0.102 7 m，性能提升65.76%；定位平均误差为0.180 7 m，性能提升56.67%，说明本文算法能够有效减少测距误差，并且定位精确度较高。

Abstract:

The accuracy of the range-finding Radio Frequency Identification(RFID) indoor positioning algorithm will be seriously affected by ranging error. An indoor positioning algorithm based on Multi-antenna Phase Difference Of Arrival(M-PDOA) is proposed. M-PDOA ranging method is employed to measure the distance. The trilateral positioning algorithm is adopted to position the target tag. The simulation results show that the average ranging error of the algorithm is 0.102 7 m, which has a performance improvement by 65.76%; the average error of positioning is 0.180 7 m, which has a performance improvement by 56.67%, indicating that the proposed algorithm can effectively reduce the ranging errors and has high positioning accuracy.