Dictionary learning of sound speed profiles
WebThe EOFs identify spatial structures with dominant variability and represent their temporal evolution without any prior information, expressing SSPs as a linear combination of few orthogonal basis functions that describe the statistics of … WebSep 15, 2016 · Dictionary learning of sound speed profiles September 2016 The Journal of the Acoustical Society of America140(4) …
Dictionary learning of sound speed profiles
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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, … WebDictionary learning of sound speed profiles. Michael Bianco and Peter Gerstoft. 13 March 2024 The Journal of the Acoustical Society of America, Vol. 141, No. 3. Inverse Methods in Underwater Acoustics. N.R. Chapman. 1 Jan 2024. Compressive acoustic sound speed profile estimation.
WebMay 5, 2024 · Here, the constant k = ω / c is the acoustic wavenumber, ω is the angular frequency, c is the sound speed, and ki is the wavenumber along the i = x , y , z spatial coordinates. Assuming without loss of generality that waves propagate along the z -axis, their wavenumber is k z = ± k 2 − k x 2 − k y 2. WebJan 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 …
WebJan 19, 2024 · Empirical orthogonal functions (EOFs) are regularly employed to model and represent SSPs using a linear combination of basis functions that capture the sound … WebThe sound speed is a key parameter that affects the underwater acoustic positioning and navigation. Aiming at the high-precision construction of sound speed field (SSF) in the complex...
WebFeb 1, 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 decomposed into multiple...
WebDictionary learning of sound speed profiles To provide constraints on the inversion of ocean sound speed profiles (SSPs), SSPs are often modeled using empirical … earthourhomebarneyWebThe 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 measurements via a hydrophone array. Empirical orthogonal functions are introduced to reduce the unknown parameters in inversion algorithm. earth or the earth grammarWebJan 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 … ctl28wh3-sWebMar 1, 2024 · Dictionary learning of sound speed profiles. Michael Bianco Scripps Institution of Oceanography, University of California San Diego, La Jolla, California … earth our home 1 chapter 1 bamboozleWebMar 1, 2024 · Europe PMC is an archive of life sciences journal literature. earth our living planetWebSep 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 … earth osWebMar 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... ctl3336led-l