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Reconstructing two-dimensional acoustic object fields by use of digital phase conjugation of scanning laser vibrometry recordings
Hochschule für Technik/Wirtschaft, University of Applied Sciences, Friedrich-List-Platz.
Hochschule für Technik/Wirtschaft, University of Applied Sciences, Friedrich-List-Platz.
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2003 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 42, no 29, p. 5831-5838Article in journal (Refereed) Published
Abstract [en]

scanning laser Doppler vibrometer is used to record two-dimensional ultrasound fields in air. The laser light of the vibrometer traverses the sound field to and from a rigid reflector and determines the velocity field, a quantity proportional to the sound pressure rate, in each scanned point relative to the sound source. The object sound is the scattered field from objects outside the recording area. Digital reconstruction by use of phase conjugation (time reversal) of the object sound field is then performed, and the original object field intensity and phase is reconstructed

Place, publisher, year, edition, pages
2003. Vol. 42, no 29, p. 5831-5838
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-8786DOI: 10.1364/AO.42.005831Local ID: 752a7300-6f73-11db-962b-000ea68e967bOAI: oai:DiVA.org:ltu-8786DiVA, id: diva2:981724
Note
Validerad; 2003; 20060926 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Olsson, ErikMolin, Nils-ErikSjödahl, Mikael

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