Beamforming with a volumetric array of massless laser spark sources—Application in reflection tracking

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Joona Eskelinen
  • Symeon Delikaris-Manias
  • Javier Gómez Bolaños
  • Edward Hæggström
  • Ville Pulkki

Organisaatiot

Kuvaus

A volumetric array of laser-induced air breakdown sparks is used to produce a directional and steerable acoustic source. The laser breakdown array element is broadband, point-like, and massless. It produces an impulse-like waveform in midair, thus generating accurate spatio-temporal information for acoustic beamforming. A laser-spark scanning setup and the concept of a massless steerable source are presented and evaluated with a cubic array by using an off-line far field delay-and-sum beamforming method. This virtual acoustic array with minimal source influence can, for instance, produce narrow transmission beams to obtain localized and directional impulse response information by reflection tracking.

Yksityiskohdat

AlkuperäiskieliEnglanti
SivutEL389-EL395
JulkaisuJournal of the Acoustical Society of America
Vuosikerta137
Numero6
TilaJulkaistu - 2015
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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