Acoustic source localization with the angular spectrum approach in continuously stratified media.
J Acoust Soc Am
; 148(4): EL333, 2020 Oct.
Article
em En
| MEDLINE
| ID: mdl-33138472
ABSTRACT
The angular spectrum approach (ASA)-a frequency domain method to calculate the acoustic field-enables highly efficient passive source localization and modeling forward propagation in homogeneous media. If the medium is continuously stratified, a first-order analytical solution may be obtained for the field at arbitrary depth. Simulations show that the proposed stratified ASA solution enables accurate source localization as compared to the uncorrected ASA (error from 1.2 ± 0.3 to 0.49 ± 0.3 wavelengths) at scalings relevant to biomedical, underwater, and atmospheric acoustic applications, and requiring milliseconds on nonspecialized hardware. The results suggest the proposed correction enables efficient and accurate localization in stratified environments.
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MEDLINE
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En
Revista:
J Acoust Soc Am
Ano de publicação:
2020
Tipo de documento:
Article