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dc.contributor.author
Aparicio, Joaquin
dc.contributor.author
Jimenez, Ana
dc.contributor.author
Alvarez, Fernando J.
dc.contributor.author
Ureña, Jesús
dc.contributor.author
de Marziani, Carlos Manuel
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dc.contributor.author
de Diego, Daniel
dc.contributor.author
Cruz, Nuno
dc.contributor.author
Campos, Helder
dc.date.available
2016-05-09T20:27:05Z
dc.date.issued
2015-02
dc.identifier.citation
Aparicio, Joaquin; Jimenez, Ana; Alvarez, Fernando J.; Ureña, Jesús; de Marziani, Carlos Manuel; et al.; Accurate detection of spread-spectrum modulated signals in reverberant underwater environments; Elsevier; Applied Acoustics; 88; 2-2015; 57-65
dc.identifier.issn
0003-682X
dc.identifier.uri
http://hdl.handle.net/11336/5591
dc.description.abstract
In those positioning systems based on the detection of acoustic signals, an accurate detection of the arrival times is crucial for a correct estimation of the distance between nodes, and therefore, for the precise estimation of the node that wants to be located. In order to obtain this arrival time more accurately, acoustic signals can be coded using pseudorandom noise, but these coded signals are still affected by underwater channel phenomena. In this work, the detection of spread-spectrum modulated signals is analyzed in underwater environments that are highly affected by multipath and reverberation. A spread-spectrum signal, which consist of a modulated Kasami code, has been emitted through two different pools, reaching a receiver where it has been captured after following several line-of-sight and nonline-of-sight paths. Then, a correlation process has been performed offline to provide information about the arrival times (times-of-flight) that form the multipath structure. These times-of-flight are compared with those provided by an underwater acoustic propagation model, in order to test the performance of this model and its capacity to predict the outcome of signal detection in underwater environments with a strong multipath and reverberation component. That way, the validated propagation model could be later used in future studies to predict the detection of spread-spectrum signals and the performance of systems that use them in these adverse environments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Multipath Environments
dc.subject
Underwater Acoustic Propagation Model
dc.subject
Spread-Spectrum Signals
dc.subject.classification
Control Automático y Robótica
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dc.subject.classification
Ingeniería Eléctrica, Ingeniería Electrónica e Ingeniería de la Información
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Accurate detection of spread-spectrum modulated signals in reverberant underwater environments
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-04-28T14:51:04Z
dc.journal.volume
88
dc.journal.pagination
57-65
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Aparicio, Joaquin. Universidad de Alcala; España
dc.description.fil
Fil: Jimenez, Ana. Universidad de Alcala; España
dc.description.fil
Fil: Alvarez, Fernando J.. Universidad de Extremadura; España
dc.description.fil
Fil: Ureña, Jesús. Universidad de Alcala; España
dc.description.fil
Fil: de Marziani, Carlos Manuel. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: de Diego, Daniel. Universidad de Alcala; España
dc.description.fil
Fil: Cruz, Nuno. Universidad de Porto; Portugal
dc.description.fil
Fil: Campos, Helder. Universidad de Porto; Portugal
dc.journal.title
Applied Acoustics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0003682X14002096
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apacoust.2014.08.002
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.apacoust.2014.08.002
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