DocumentCode :
3318875
Title :
A Non-Line-of-Sight error mitigation method in wireless location system
Author :
Yuanhua, He ; Hongsheng, Li
Author_Institution :
Sch. of Autom., Wuhan Univ. of Technol.(WHUT), Wuhan, China
fYear :
2009
fDate :
8-11 Aug. 2009
Firstpage :
282
Lastpage :
286
Abstract :
A key obstacle to high accuracy location is the None Line of Sight (NLOS) transmission of signal in wireless localization. It adds positive error to distance measurements. An effective location algorithm based on nonlinear constraint optimization is proposed to mitigate NLOS errors. The proposed method forms distance error optimization constraint using the geometric relationship between the base stations and mobile station. It improves the location accuracy by calibrating the distance measurements and modifying the objective function. Simulation results show that this new method can efficiently reduce the effect of the NLOS error, and is robust to different NLOS error.
Keywords :
error analysis; mobile radio; optimisation; radio direction-finding; base stations; distance error optimization constraint; distance measurements; mobile communications; mobile station; non-line-of-sight error mitigation method; nonlinear constraint optimization; signal transmission; wireless localization; wireless location system; Automation; Base stations; Computer errors; Constraint optimization; Distance measurement; Error correction; Helium; Mobile communication; Quadratic programming; Taylor series; constrained optimization; non-line-of-sight; wireless location;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer Science and Information Technology, 2009. ICCSIT 2009. 2nd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4519-6
Electronic_ISBN :
978-1-4244-4520-2
Type :
conf
DOI :
10.1109/ICCSIT.2009.5234948
Filename :
5234948
Link To Document :
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