Joint position and clock tracking of wireless node

"In this paper we consider the problem of joint position and clock tracking of a mobile wireless node by a set of reference nodes. Imperfections of the mobile clock are characterized by its skew and offset, which are assumed to change with time according to simple random walk models. We put fo...

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Autores principales: Grisales Campeón, Juan Pablo, Fierenz, Pablo Ignacio
Formato: Artículos de Publicaciones Periódicas acceptedVersion
Lenguaje:Inglés
Publicado: 2022
Materias:
TEORIA DE LA ESTIMACION
SEGUIMIENTO
Acceso en línea:http://ri.itba.edu.ar/handle/123456789/3898
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Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA) de Instituto Tecnológico de Buenos Aires (ITBA)
id I32-R138-123456789-3898
record_format dspace
spelling I32-R138-123456789-38982022-12-07T13:06:52Z Joint position and clock tracking of wireless node Grisales Campeón, Juan Pablo Fierenz, Pablo Ignacio TEORIA DE LA ESTIMACION SEGUIMIENTO "In this paper we consider the problem of joint position and clock tracking of a mobile wireless node by a set of reference nodes. Imperfections of the mobile clock are characterized by its skew and offset, which are assumed to change with time according to simple random walk models. We put forth a measurement protocol, similar to that used in two-way rang ing, and apply extended and unscented Kalman filters to estimate the position and the velocity of the mobile, and the skew and offset of its clock. We analyze the performance of the algorithms by means of extensive simulations, where the mobile’s velocity is assumed to follow a random walk. Simulation results are compared to the Cramér-Rao bound for a simplified model of a mobile with constant velocity. We show that estimation errors are largely independent of the mean values of the offset and the skew, but they increase with the mean speed. We also study how estimation errors are influenced by other factors such as the number of reference nodes. We believe these results to be of relevance, specially, in indoor positioning applications." 2022-05-31T18:31:14Z 2022-05-31T18:31:14Z 2021 Artículos de Publicaciones Periódicas info:eu-repo/semantics/acceptedVersion http://ri.itba.edu.ar/handle/123456789/3898 en info:eu-repo/semantics/altIdentifier/doi/10.1016/j.comnet.2021.108296 application/pdf
institution Instituto Tecnológico de Buenos Aires (ITBA)
institution_str I-32
repository_str R-138
collection Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA)
language Inglés
topic TEORIA DE LA ESTIMACION
SEGUIMIENTO
spellingShingle TEORIA DE LA ESTIMACION
SEGUIMIENTO
Grisales Campeón, Juan Pablo
Fierenz, Pablo Ignacio
Joint position and clock tracking of wireless node
topic_facet TEORIA DE LA ESTIMACION
SEGUIMIENTO
description "In this paper we consider the problem of joint position and clock tracking of a mobile wireless node by a set of reference nodes. Imperfections of the mobile clock are characterized by its skew and offset, which are assumed to change with time according to simple random walk models. We put forth a measurement protocol, similar to that used in two-way rang ing, and apply extended and unscented Kalman filters to estimate the position and the velocity of the mobile, and the skew and offset of its clock. We analyze the performance of the algorithms by means of extensive simulations, where the mobile’s velocity is assumed to follow a random walk. Simulation results are compared to the Cramér-Rao bound for a simplified model of a mobile with constant velocity. We show that estimation errors are largely independent of the mean values of the offset and the skew, but they increase with the mean speed. We also study how estimation errors are influenced by other factors such as the number of reference nodes. We believe these results to be of relevance, specially, in indoor positioning applications."
format Artículos de Publicaciones Periódicas
acceptedVersion
author Grisales Campeón, Juan Pablo
Fierenz, Pablo Ignacio
author_facet Grisales Campeón, Juan Pablo
Fierenz, Pablo Ignacio
author_sort Grisales Campeón, Juan Pablo
title Joint position and clock tracking of wireless node
title_short Joint position and clock tracking of wireless node
title_full Joint position and clock tracking of wireless node
title_fullStr Joint position and clock tracking of wireless node
title_full_unstemmed Joint position and clock tracking of wireless node
title_sort joint position and clock tracking of wireless node
publishDate 2022
url http://ri.itba.edu.ar/handle/123456789/3898
work_keys_str_mv AT grisalescampeonjuanpablo jointpositionandclocktrackingofwirelessnode
AT fierenzpabloignacio jointpositionandclocktrackingofwirelessnode
_version_ 1765661000338505728

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