一种无线定位非视距误差消除算法研究

Research on algorithm of NLOS error elimination for wireless location

在分布式多天线的基础上,提出一种新型非视距误差消除算法,并将其应用于传统的时间到达(time of ar-rival,TOA)定位。利用含多天线的天线组,测量出导致产生非视距传播的散射体的位置,将这些散射体看作虚拟基站,测量出移动台的坐标,完成无线定位。通过对算法的仿真结果分析表明,该算法能有效地消除非视距误差,比一些传统算法具有更高的定位精度。

It has a very important influence on positioning accuracy.This paper discusses a distributed multi-antenna based NLOS error elimination algorithm applied to the traditional localization method of TOA.The algorithm firstly estimates the position of the scatterers which cause the NLOS propagation by different antennas in one multi-antenna array.Then the estimated scatterers can be employed as virtual base station to calculate the position of the mobile station.The experiment results show that the proposed algorithm can eliminate NLOS error effectively.The location accuracy is greatly improved compared with other two conventional localization methods.