DocumentCode :
1656047
Title :
A ToA-Based Location Algorithm Reducing the NLoS Error under Location-Aware Networks
Author :
Zhang, Yanlong ; Ren, Jingjing ; Chen, Weidong
Author_Institution :
Dept. of Elec. Eng. & Inf. Sci, Univ. of Sci. & Tech. of China, Hefei, China
fYear :
2011
Firstpage :
1
Lastpage :
4
Abstract :
Precise positioning of agent is a challenging task due to the non line-of-sight (NLoS) propagation in ad-hoc location-aware networks. In an effort to enhance location accuracy, we address a novel scheme to alleviate NLoS error based on the appealing feature of linear lines-of-position (LLoP) and taylor series-least square (TS-LS). This approach utilizes single measurements at a set of anchors and comprises three stages: combination-refine stage, line-of-sight (LoS) reconstruction and taylor-optimization. The second stage reconstructs the true ranges by subtracting the NLoS measurements from the maximum measurement residual. Simulation results and discussions are given to evaluate the performance in typical NLoS environments. The conclusions infer that the proposed algorithm outperforms the traditional algorithms in dense NLoS environment at a reasonable computational complexity.
Keywords :
ad hoc networks; computational complexity; least squares approximations; optimisation; LLoP; NLoS; TS-LS; ToA-based location algorithm; ad-hoc location-aware network; combination-refine stage; computational complexity; linear lines-of-position; location-aware networks; non line-of-sight; taylor series- least square; Ad hoc networks; Equations; Mathematical model; Measurement uncertainty; Noise measurement; Nonlinear optics; Signal processing algorithms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
ISSN :
2161-9646
Print_ISBN :
978-1-4244-6250-6
Type :
conf
DOI :
10.1109/wicom.2011.6040577
Filename :
6040577
Link To Document :
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