Improved Residual Weighting for NLOS Mitigation in TDOA-based UWB Positioning Systems

被引:0
作者
Al-Qahtani, K. M. [1 ]
Al-Ahmari, A. S. [1 ]
Muqaibel, A. H. [1 ]
Landolsi, M. A. [1 ]
Johar, U. M. [1 ]
机构
[1] King Fahd Univ Petr & Minerals KFUPM, Dept Elect Engn, Dhahran 31261, Saudi Arabia
来源
2014 21ST INTERNATIONAL CONFERENCE ON TELECOMMUNICATIONS (ICT) | 2014年
关键词
Ultra wideband; non-line-of-sight; time difference-of-arrival; TDOA;
D O I
暂无
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
This paper presents an improved algorithm for mitigating non-line-of-sight (NLOS) error in time-difference-of-arrival (TDOA) positioning applications employing ultra wideband (UWB) signals. The main idea of the algorithm is based on calculating the residuals for the different subsets formed by the reference nodes. The final estimate is a linear summation of the estimate from the different sets weighted by the inverse of the residual to eliminate the effect of NLOS nodes. The algorithm performance is thoroughly analyzed using various statistical channel models based on the IEEE 802.15.4a standard. The impact of changing parameters like SNR, cell size, number of sensors and propagation environment types, on the accuracy of the algorithm is also investigated. The improved residual weighting algorithm is compared with a previously published algorithm and shows a better accuracy for TDOA positioning.
引用
收藏
页码:211 / 215
页数:5
相关论文
共 12 条
[1]  
Chan Yiu-Tong, 2006, VEHICULAR TECHNOLOGY, V55, P24
[2]  
Chan Yiu-Tong, 2006, VEHICULAR TECHNOLOGY, V55, P10
[3]   Time-of-arrival based localization under NLOS conditions [J].
Chan, YT ;
Tsui, WY ;
So, HC ;
Ching, PC .
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2006, 55 (01) :17-24
[4]   Exact and approximate maximum likelihood localization algorithms [J].
Chan, YT ;
Hang, HYC ;
Ching, PC .
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2006, 55 (01) :10-16
[5]  
Chen P., 1999, P IEEE WIR COMM NETW, P316
[6]   Localization via ultra-wideband radios [J].
Gezici, S ;
Tian, Z ;
Giannakis, GB ;
Kobayashi, H ;
Molisch, AF ;
Poor, HV ;
Sahinoglu, Z .
IEEE SIGNAL PROCESSING MAGAZINE, 2005, 22 (04) :70-84
[7]  
Gezici S., 2005, SIGNAL PROCESSING MA, V22, P84
[8]  
Guvenc I, 2007, IEEE WCNC, P1573
[9]  
Lei Jiao, 2007, 2007 IEEE International Conference on Control and Automation, ICCA 2007, P1354, DOI 10.1109/ICCA.2007.4376581
[10]  
Li F., 2006, PROC ASIA PACIFIC C