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https://www.repositorio.mar.mil.br/handle/ripcmb/844137Registro completo de metadados
| Campo DC | Valor | Idioma |
|---|---|---|
| dc.contributor | Silva, António. | - |
| dc.contributor | Jesus, Sérgio M.. | - |
| dc.contributor.author | Maia, Lussac Prestes | - |
| dc.contributor.author | Silva, António | - |
| dc.contributor.author | Jesus, Sérgio M. | - |
| dc.date.accessioned | 2019-09-10T16:41:06Z | - |
| dc.date.available | 2019-09-10T16:41:06Z | - |
| dc.date.issued | 2018 | - |
| dc.identifier.uri | http://www.redebim.dphdm.mar.mil.br/vinculos/00001b/00001bfa.pdf | - |
| dc.identifier.uri | http://www.repositorio.mar.mil.br/handle/ripcmb/844137 | - |
| dc.description | Inclui bibliografia. | en_US |
| dc.description | The usage of time-reversal in underwater communications relies on array channel matched-filtering, coherent channel replica alignment and summation. Traditionally, replicas are channel responses to probe signals received at a previous time. These are noisy and subject to distortion due to channel variability. This paper offers an alternative where noisy and potentially distorted channel replicas are replaced by noise-free and time-updated replicas generated by a numerical model constrained on previously data-identified environmental parameters. The method is applied on real data, where a quadrature phase shift key modulated signal on a 25.6 kHz carrier at 4 kbit/s was transmitted in a shallow water area over a distance of approximately 900 m. Sustained analysis without supervision shows that the proposed method may attain a mean square error gain up to 5.4 dB when compared to tradi- tional time-reversal. | en_US |
| dc.language.iso | eng | pt_BR |
| dc.rights | openAccess | pt_BR |
| dc.subject | Acústica Submarina | pt_BR |
| dc.title | Sustained underwater acoustic communications with environmental-based time-reversal | pt_BR |
| dc.type | journalArticle | pt_BR |
| dc.subject.dgpm | Ciência, Tecnologia e Inovação | - |
| Aparece nas coleções: | Ciência, Tecnologia e Inovação: Coleção de Artigos | |
Arquivos associados a este item:
| Arquivo | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| 00001bfa.pdf | 557,66 kB | Adobe PDF |  Visualizar/Abrir |
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