基于多分布式天线阵列的移动台定位算法  

Positioning Algorithm for Mobile Station Based on Distributed Multi-Antenna

作　　者：彭静[1] 尹锁柱[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《桂林电子科技大学学报》2009年第3期217-221,共5页Journal of Guilin University of Electronic Technology

摘　　要：在无线定位环境中尤其是闹市区，为了减少非视距（NLOS）误差对定位精度的影响，研究了一种基于多分布式天线阵列的移动台定位算法在不同基站数目下的性能。多分布式天线阵列定位算法是在散射体信道中，利用NLOS附加误差的相关性分析，提取散射体位置信息，进而得到移动台坐标。利用计算机仿真，改变参与定位的基站数目，比较该算法在3～7个基站时的定位精度。结果表明，该算法在基站数目为3时性能较好，能有效抑制NLOS误差影响，提高定位精度，具有一定的实用性。An important issue in wireless location systems, especially in urban environment, is the non-line-of-sight （NLOS） error. In this paper, we research the performance of the distributed multi-antenna algorithm under different number of base station （BS） in order to reduce the NLOS impact. With the additional NLOS errors correlation analysis, the scatter location information is extracted in channel. Then the coordinates of mobile station （MS） is gained. By computer simulation, changing the number of base stations involved in positioning, and eomparing the positioning accuracy of various algorithms from three to seven base stations. The result shows the proposed algorithm can effectively inhibit the effects of NLOS errors and improve location＇s accuracy. Its performance is better when the number of BS is three, so this algorithm has practicality to some extent.

关 键 词：非视距 天线阵列 散射体 附加误差 

分 类 号：TN929.53[电子电信—通信与信息系统]