基于单次反射圆模型的混合定位算法研究  

Study on Hybrid Location Algorithm Based on Single-Bounced Circle Model

作　　者：陆音[1] 项政[1] 

机构地区：[1]南京邮电大学江苏省无线通信重点实验室,南京210003

出　　处：《计算机测量与控制》2016年第8期203-205,共3页Computer Measurement &Control

基　　金：国家自然科学基金资助项目(61271236);江苏政府留学奖学金资助项目

摘　　要：针对现有定位算法抗非视距能力弱、且对移动台求解时往往需要一个比较精确初始解的问题,利用移动台和散射体的几何位置关系,基于单次反射圆模型提出了一种抑制非视距误差的波达时间/波达角混合定位算法;定位过程中将散射体视为虚拟基站,根据最大散射半径确定移动台的可能位置范围,在该范围内搜寻所有满足约束条件的位置点,对这些点使用加权平均处理方式以提高定位精度,最后结果即为移动台估计位置;计算机仿真表明了算法的有效性。The existing location algorithms have low anti-Non-Line-of-Sight （NLOS） ability, and often require an accurately initial estimate during the calculation. In the single-bounced circle model, through the geometric relationships between the mobile station （MS） and the scatterers, a TOA/AOA hybrid location algorithm is proposed to suppress the NLOS error. During the process of positioning, scat- terers are regarded as virtual base station （BS） . According to the maximum scatter radius, the possible location range can be determined. After seeking all points that satisfy the constraints, the weighted average method is used to improve the positioning accuracy, and the final result is the location of the mobile station. Computer simulations show the efficiency of the proposed algorithm.

关 键 词：单次反射圆模型 波达时间/波达角 非视距 虚拟基站 混合定位 

分 类 号：TN929.5[电子电信—通信与信息系统]