Range-dependent geoacoustic inversion using equivalent environmental model in the presence of doppler effect.
J Acoust Soc Am
; 151(4): 2613, 2022 Apr.
Article
in En
| MEDLINE
| ID: mdl-35461480
ABSTRACT
Geoacoustic inversion using moving sensors attracts lots of interest due to the ease of deployment and low cost. However, the well-established techniques, such as matched-field inversion (MFI), may run into difficulties when the sensors are in a range-dependent environment for mismatch issues and increasing unknown parameters. Given a range-dependent environment, the paper focuses on the inversion using a synthetic aperture created by moving sensors in the presence of the Doppler effect. The derivation is given to obtain an equivalent range-independent environmental model for fast inversion, instead of a range-dependent one. The received fields are modified using the Doppler-shifted wavenumbers. The simulations and results of the SWellEx-96 experimental data verify the effectiveness of the proposed inversion method.
Full text:
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Database:
MEDLINE
Language:
En
Year:
2022
Type:
Article