对抗NLOS误差的TOA/AOA混合无线定位算法  

A TOA/AOA Hybrid Wireless Location Algorithm for NLOS Error Mitigation

作　　者：何燕[1] 胡捍英[1] 周山[1] 

机构地区：[1]解放军信息工程大学信息工程学院,郑州450002

出　　处：《电讯技术》2006年第6期167-171,共5页Telecommunication Engineering

摘　　要：信道的时间和空间的变化所导致的非视距(NLOS)传输是移动定位技术面临的巨大困难。为此,利用蜂窝网络的结构、信号到达时间(TOA)以及信号到达角度(AOA)提出了一种TOA/AOA混合定位算法,有效地解决了这一问题。研究了算法在不同类型NLOS误差下的表现,结果表明该算法能够有效地降低NLOS误差的影响,定位精度比其它算法有显著提高,而且在不同分布的NLOS误差下表现稳定。The None Line of Sight （NLOS） transmission resulted from the temporal and spatial variations of the channel is a vital issue faced by mobile location techniques. This paper presents a new hybrid location algorithm based on the time of arrival （ TOA ） and angle of arrival （AOA） of the wireless signal. The algorithm can efficiently address this problem, thus reducing the location error. Different distributed NLOS error is utilized to research the performance of this approach. Results show that the hybrid algorithm can efficiently reduce the influence of the NLOS error, and is robust to different distributed NLOS error. The location accuracy has been improved greatly compared with other algorithms.

关 键 词：移动通信 定位算法 TOA/AOA NLOS误差 

分 类 号：TN929.5[电子电信—通信与信息系统]