DocumentCode
1602986
Title
Location using LOS range estimation in NLOS environments
Author
Venkatraman, S. ; Caffery, J., Jr. ; You, H.-R.
Author_Institution
Dept. of ECECS, Cincinnati Univ., OH, USA
Volume
2
fYear
2002
fDate
6/24/1905 12:00:00 AM
Firstpage
856
Abstract
We present an algorithm for mitigating the non-line-of-sight (NLOS) error that corrupts time of arrival (TOA), or range, measurements. The method uses the available data regarding the ranges and the base station (BS) layout, in conjunction with cell geometry, to adjust the measured ranges to near their true line-of-sight (LOS) values. The range adjustments are obtained by scaling the NLOS ranges using scale factors that are estimated from a constrained nonlinear optimization problem.
Keywords
cellular radio; optimisation; parameter estimation; radio direction-finding; LOS; NLOS error; NLOS range scaling location algorithm; base station layout; cell geometry; constrained nonlinear optimization; cost function; line-of-sight; mobile station location; nonline-of-sight error; radio location systems; range measurement; scale factors; time of arrival measurement; Base stations; Constraint optimization; Error analysis; FCC; Geometry; History; Intelligent networks; Noise measurement; Telecommunications; Time measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th
Print_ISBN
0-7803-7484-3
Type
conf
DOI
10.1109/VTC.2002.1002609
Filename
1002609
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