Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Experimental results of passive imaging of moving continuous broadband sound sources within a sensor field
Ansvarlig organisasjon
2011 (engelsk)Inngår i: IEEE Journal of Oceanic Engineering, ISSN 0364-9059, E-ISSN 1558-1691, Vol. 36, nr 1, s. 26-37Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Sparsely distributed sensors or sparse arrays can be associated with high positional accuracy and capability for large area surveillance. This paper shows, both through simulations and with real measurement data, that sparse sensor systems can be used to accomplish high-performance underwater surveillance. The paper focuses on measurement setups with several passive single hydrophones placed hundreds of meters apart in a water depth of dozen of meters. By such a setup, a sound source is more likely to move inside the array, and thus near-field processing can be considered. The sensor pairs will also be located in different directions in relation to the sound source. These two prerequisites give the possibilities to high spatial resolution. Images of the coherent sound activity for different sensor pairs are formed, and every sensor pair map is summarized into a resulting map. In this way, an arbitrary number of sound sources of a target can be resolved. Good correlation results are shown even when the sound sources are at the same distance as the baseline of the sensor pairs. This is achieved by Doppler compensating for target movement and also by whitening of the cross spectra. The analyses of the measurements also show that baseline-dependent bandwidth can improve the results. In this paper, it is indicated from experimental data that two propeller sound sources could be resolved, and in another measurement setup, the engine could be separated from the propellers.

sted, utgiver, år, opplag, sider
IEEE , 2011. Vol. 36, nr 1, s. 26-37
Emneord [en]
Underwater acoustics, Acoustic imaging, Acoustic measuring instruments, Imaging systems, Signal processing, Sonar, Underwater imaging
HSV kategori
Identifikatorer
URN: urn:nbn:se:bth-7468DOI: 10.1109/JOE.2010.2066790ISI: 000288683100003Lokal ID: oai:bth.se:forskinfo8389D4FB87B1DCBAC12578F7006D01DEOAI: oai:DiVA.org:bth-7468DiVA, id: diva2:835091
Tilgjengelig fra: 2012-09-18 Laget: 2011-08-25 Sist oppdatert: 2017-12-04bibliografisk kontrollert

Open Access i DiVA

fulltext(2637 kB)167 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 2637 kBChecksum SHA-512
d73928a50d5dba7be2d31b0d7fc65697e9b388f14d0d371c3a70fb37e98b888374c6333fc12acd7753e29bcd84235978ff0c88f62e27a14172952eded264c189
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekst

Personposter BETA

Pettersson, MatsClaesson, Ingvar

Søk i DiVA

Av forfatter/redaktør
Pettersson, MatsClaesson, Ingvar
I samme tidsskrift
IEEE Journal of Oceanic Engineering

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 167 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 151 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf