publication . Article . Other literature type . 2018

Compressive Sound Speed Profile Inversion Using Beamforming Results

Choo, Youngmin; Seong, Woojae;
Open Access English
  • Published: 04 May 2018 Journal: Remote Sensing (issn: 2072-4292, Copyright policy)
  • Publisher: MDPI AG
Sound speed profile (SSP) significantly affects acoustic propagation in the ocean. In this work, the SSP is inverted using compressive sensing (CS) combined with beamforming to indicate the direction of arrivals (DOAs). The travel times and the positions of the arrivals can be approximately linearized using their Taylor expansion with the shape function coefficients that parameterize the SSP. The linear relation between the travel times/positions and the shape function coefficients enables CS to reconstruct the SSP. The conventional objective function in CS is modified to simultaneously exploit the information from the travel times and positions. The SSP is esti...
free text keywords: compressive sensing, sound speed profile inversion, beamforming, SWellEx-96, Science, Q, General Earth and Planetary Sciences
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