By Jean-Claude Le Gac, Yann Steéphan (auth.), Andrea Caiti, N. Ross Chapman, Jean-Pierre Hermand, Sérgio M. Jesus (eds.)
This quantity includes the gathering of papers from the second one workshop on Experimental Acoustic Inversion recommendations for Exploration of the Shallow Water setting.
Acoustic concepts give you the top-rated capability for distant sensing of ocean and sea flooring methods, and for probing the constitution underneath the ocean ground. No different strength propagates as successfully within the ocean: radio waves and visual mild are seriously restricted in variety as the ocean is a hugely conductive medium. even though, sound from breaking waves and coastal delivery may be heard in the course of the ocean, and marine mammals converse acoustically over basin scale distances.
The papers during this e-book point out a excessive point of study curiosity that has generated major development in improvement and alertness of experimental acoustic inversion ideas. The functions span a extensive scope in geosciences, from geophysical, organic or even geochemical study. The record contains: estimation of geotechnical houses of sea mattress fabrics; navigation and mapping of the ocean flooring; fisheries, aquaculture and sea mattress habitat review; tracking of marine mammals; sediment shipping; and research of usual geohazards in marine sediments.
This e-book is essentially meant for physicists and engineers operating in underwater acoustics and oceanic engineering. it's going to even be of curiosity to marine biologists, geophysicists and oceanographers as power clients of the methodologies and strategies defined within the e-book contributions.
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Additional resources for Acoustic Sensing Techniques for the Shallow Water Environment: Inversion Methods and Experiments
E. DOSSO AND C. W. HOLLAND led to similar inversion results, suggesting the approach is not overly sensitive to the exact form of the data uncertainties and providing confidence in the results. In particular, measurement errors appear sufficient to represent the total data uncertainty in this case, in marked contrast to other approaches to geoacoustic inversion, such as matched-field inversion, where theory errors typically dominate [4, 7]. The assumed form of the data errors was validated by applying rigorous statistical tests to the data residuals.
P. HERMAND The review covers a number of approaches ranging from Tappert’s original acoustic retrogation to Parvulescu’s time reversal and adjoint modelling. Even though they are not implementing backpropagation as a mechanism of optimisation (they rely on global optimisation), the classical matchedfield processing (MFP) and the model-based matched filter (MBMF) approaches are discussed in this review since they can be viewed as a model-based version of the phase-conjugation and time-reversal concepts, respectively.
Wilmut M. J. and Lapinski A. , An adaptive hybrid algorithm for geoacoustic inversion. IEEE J. Oceanic Eng. 26, 324–336 (2001). 6. Dosso. S. E. Quantifying uncertainties in geoacoustic Inversion I: A fast Gibbs sampler approach. J. Acoust. Soc. Am. 111, 129–142 (2002). 7. Dosso S. E. and Nielsen. P. , Quantifying uncertainties in geoacoustic inversion II: Application to a broadband shallow-water experiment. J. Acoust. Soc. Am. 111, 143–159 (2002). 8. Holland C. W. and J. , High-resolution geoacoustic inversion in shallow water: A joint time- and frequency-domain approach.
Acoustic Sensing Techniques for the Shallow Water Environment: Inversion Methods and Experiments by Jean-Claude Le Gac, Yann Steéphan (auth.), Andrea Caiti, N. Ross Chapman, Jean-Pierre Hermand, Sérgio M. Jesus (eds.)