基站布设方案对蓝牙指纹定位精度的影响

摘要

In order to supplement the insufficiency of current study on base station selection in bluetooth fingerprint posi-tioning based on RSSI,the paper focused on the impact of the number of base stations and the sampling interval on the accura-cy of the bluetooth fingerprint positioning:in a typical indoor office environment,the different number of base stations and different sampling intervals were selected for the analysis on bluetooth fingerprint positioning based on RSSI,the nearest neighboring matching algorithm was used as the online location matching algorithm,and the indicators of the error of point, positioning accuracy and reliability were calculated.Experimental result showed that the positioning accuracy and reliability could reach the best when the base stations of five or six radiated out in a typical office,or arranged in a straight line in the cor-ridor.%为了弥补当前对在基于RSSI的蓝牙指纹定位过程中基站选取布设研究的不足,重点研究基站个数和采样间距对蓝牙指纹定位精度的影响:在典型室内办公环境中,选取不同数目的基站和不同的采样间距进行基于RSSI的蓝牙指纹定位分析,采用最近邻匹配算法作为在线定位匹配算法,给出点位误差 、 定位精度和精度可靠性指标.实验结果表明:基站在典型办公室内5~6个呈放射状排列和在走廊中直线排列布设时,定位精度及其可靠性可达到最高.