Simultaneous ranging and self-positioning in unsynchronized wireless acoustic sensor networks
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Otros documentos de la autoría: Cobos, Maximo; Pérez Solano, Juan J.; Belmonte-Fernández, Óscar; Ramos, German; Torres, Ana M.
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Título
Simultaneous ranging and self-positioning in unsynchronized wireless acoustic sensor networksAutoría
Fecha de publicación
2016Editor
Institute of Electrical and Electronics Engineers (IEEE)ISSN
1053-587XTipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://ieeexplore.ieee.org/document/7555383/Versión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Automatic ranging and self-positioning is a very
desirable property in wireless acoustic sensor networks (WASNs)
where nodes have at least one microphone and one loudspeaker.
However, due to environmental noise, ... [+]
Automatic ranging and self-positioning is a very
desirable property in wireless acoustic sensor networks (WASNs)
where nodes have at least one microphone and one loudspeaker.
However, due to environmental noise, interference and multipath
effects, audio-based ranging is a challenging task. This paper
presents a fast ranging and positioning strategy that makes use
of the correlation properties of pseudo-noise (PN) sequences for
estimating simultaneously relative time-of-arrivals (TOAs) from
multiple acoustic nodes. To this end, a proper test signal design
adapted to the acoustic node transducers is proposed. In addition,
a novel self-interference reduction method and a peak matching
algorithm are introduced, allowing for increased accuracy in
indoor environments. Synchronization issues are removed by
following a BeepBeep strategy, providing range estimates that
are converted to absolute node positions by means of multidimensional
scaling (MDS). The proposed approach is evaluated both
with simulated and real experiments under different acoustical
conditions. The results using a real network of smartphones and
laptops confirm the validity of the proposed approach, reaching
an average ranging accuracy below 1 centimeter. [-]
Publicado en
IEEE Transactions on signal processing, VOL. 64, NO. 22, November 15, 2016Derechos de acceso
Copyright (c) 2015 IEEE. Personal use of this material is permitted.
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obtained from the IEEE by sending a request to pubs-permissions@ieee.org.
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info:eu-repo/semantics/openAccess
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