用残差加权对抗NLOS误差的移动定位算法  

A Residual Weighted Algorithm for NLOS Error Mitigation in Mobile Location

作　　者：何燕[1] 尹蕾[1] 胡捍英[1] 

机构地区：[1]解放军信息工程大学信息工程学院,河南郑州450002

出　　处：《无线电通信技术》2007年第5期35-37,共3页Radio Communications Technology

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。利用UMTS-FDD的特性以及信号到达时间(TOA)提出了一种残差加权定位算法。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,定位精度有显著提高,而且在不同分布的NLOS误差下表现稳定。The Non Line of Sight（NLOS）transmission as a result of the temporal and spatial variations of the channel is a vital issue for mobile location techniques.This paper presents a new residual weighted radio location algorithm based on the characteristic of WCDMA and the time of arrival（TOA）of the wireless signal.Different distributed NLOS errors are utilized to research the performance of this approach.Results show that this new algorithm can efficiently reduce the effect of the NLOS error,and is robust to different distributed NLOS errors.The location accuracy has been greatly improved.

关 键 词：移动通信 定位算法 TOA NLOS误差 残差加权 

分 类 号：TN929.5[电子电信—通信与信息系统]