Dictionary learning of sound speed profiles

WebSep 15, 2016 · In this paper, it is shown that dictionary learning, a form of unsupervised machine learning, can improve SSP resolution by generating a dictionary of shape functions for sparse processing (e.g. compressive sensing) that optimally compress SSPs; both minimizing the reconstruction error and the number of coefficients. WebMar 1, 2024 · The sound speed profile can be expressed as an expansion of the empirical orthogonal function for the sound speed variation. Bianco and Gerstoft (2024) …

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WebThe inverse problem is formulated as a state-space model with a state equation for the time-evolving sound speed profile and a measurement equation that incorporates acoustic … WebDictionary learning of sound speed profiles To provide constraints on the inversion of ocean sound speed profiles (SSPs), SSPs are often modeled using empirical … shank and bone https://koselig-uk.com

Inversion of the sound speed profiles with an AUV carrying …

WebSep 1, 2024 · In this paper, we mainly focus on the complete dictionary and propose a low-frequency underwater acoustic signal denoising method based on dictionary learning. We use the training dictionary rather than the fixed dictionary to represent the signal sparsely, without prior information on the signal. WebMar 1, 2024 · The sound speed profile can be expressed as an expansion of the empirical orthogonal function for the sound speed variation. Bianco and Gerstoft (2024) developed a dictionary through a... WebApr 1, 2015 · The method is illustrated with simulation and then verified using acoustic data from a 2009 experiment for which AIS information was retrieved from the Unites States Coast Guard Navigation Center... polymer ar-15 lower receiver

classification of sound speed profile in the ocean

Category:A Novel Sound Speed Profile Prediction Method Based on the

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Dictionary learning of sound speed profiles

A Novel Sound Speed Profile Prediction Method Based on the

WebMar 1, 2016 · Ocean acoustic sound speed profile (SSP) estimation requires the inversion of acoustic fields using limited observations. Compressive sensing (CS) asserts that certain underdetermined... WebThe water depth is 160 m. Sound speed, density, and attenuation are 1800 m/s, 2.0 g/cm 3 , and 0.1 dB/λ, respectively. ... from publication: Compressive Sound Speed Profile Inversion Using ...

Dictionary learning of sound speed profiles

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WebMar 1, 2024 · Europe PMC is an archive of life sciences journal literature. WebMar 12, 2024 · In the actual marine physical environment, sound speed profile (SSP) is affected by many marine environmental parameters, including some relatively stable parameters, such as the structure of the seabed, the depth of the ocean, etc.; and some dynamically changing parameters, such as marine biota, ocean current, temperature, …

WebAbstract: A range-dependent dictionary learning method is proposed to retrieve the sound-speed profile (SSP) in a water body, with the whole computational domain …

WebJan 6, 2024 · PDF Tools Share Abstract A range-dependent dictionary learning method is proposed to retrieve the sound-speed profile (SSP) in a water body, with the whole computational domain decomposed into multiple range-independent subdomains. A dictionary is constructed by using the World Ocean Atlas depth profiles of temperature … WebOct 19, 2024 · Sparse Representation of Sound Speed Profiles Based on Dictionary Learning Abstract: The perturbations of sound speed profiles (SSPs) has great …

WebDictionary learning of sound speed profiles. Article. Full-text available. Sep 2016; Michael J. Bianco. Peter Gerstoft. To provide constraints on their inversion, ocean sound speed profiles (SSPs ...

WebDictionary learning of sound speed profiles. J Acoust Soc Am. 2024 03; 141(3):1749. Bianco M, Gerstoft P. PMID: 28372126. View in: PubMed Mentions: 1 Fields: Aud Audiology Spe Speech-Language Pathology Multiple-array passive acoustic source localization in shallow water. J Acoust Soc Am. 2024 03; 141(3):1501. polymer ar 15 lowers for saleWebDefinition of Sound was a London-based dance-music group, consisting of Kevin Clark and Don Weekes, working with musicians Rex Brough (aka The Red King) and later Mike … polymer ar-15 80% lower receiver and jig kitWebMay 1, 2024 · Theoretically, the Super-Resolution (SR) reconstruction scheme is a method which is performed by many applications nowadays for the purpose of generating a High-Resolution (HR) image using the... polymer ark spawn commandWebJan 6, 2024 · A range-dependent dictionary learning method is proposed to retrieve the sound-speed profile (SSP) in a water body, with the whole computational domain … shank and bone menuWebMar 1, 2024 · Dictionary learning of sound speed profiles. Michael Bianco Scripps Institution of Oceanography, University of California San Diego, La Jolla, California … polymer ar lower 80%WebFeb 1, 2024 · In particular, two kinds of SSP uncertainties are considered: measurement errors, which generally exist in the form of Gaussian noises; and the disturbances/anomalies caused by potential ocean... polymer applications stonehavenWebFeb 6, 2024 · ABSTRACT. Uncertainties abound in sound speed profiles (SSPs) measured/estimated by modern ocean observing systems, which impede the … shank and bone north park