一种基于最小二乘法的蓝牙定位方法  

A Blueteeth Localization Method Based on Least Squares Method

作　　者：王健 闫菲 陆小军 冯莹莹 

机构地区：[1]中华通信系统有限责任公司河北分公司,河北石家庄050081 [2]中国联合网络通信有限公司河北省分公司,河北石家庄050000 [3]东北大学理学院,辽宁沈阳110819

出　　处：《计算机与网络》2017年第19期72-74,共3页Computer & Network

摘　　要：针对基于信号传播模型的定位技术,用Matlab拟合对数衰减模型,并使用信号传播模型来计算接收设备到Beacon的距离,选择3个强度值较大的Beacon,使用三角测量法估计测试点位置。考虑到受到干扰的Beacon可能被选择,会影响定位误差。在此基础上,提出可以使用多个Beacon进行定位的方法,用最小二乘法估计位置坐标。实验结果表明,改进后的方法能够有效地降低最大定位误差、减小定位误差的方差及增加定位的稳定性。In order to determine the distance of the receiving equipment to Beacon, the log-path-loss model and signal propagation model are introduced in the simulation with Matlab. By using triangulation measuring method, the test point can be located with three Beacons with higher signal intensity. An improved localization method based on least squares approximation with Beacons is proposed in this paper. Tile simulation results show that the proposed method can reduce the maximum localization error and the variance of localization error, and improve the stability of localizations

关 键 词：BEACON 信号传播模型 三边测量法 最小二乘法 

分 类 号：TN925[电子电信—通信与信息系统]