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Classifying ships by their acoustic signals with a cross-bispectrum algorithm and a radial basis function neural network
acoustic vector signal cross-bispectrum feature extraction RBFNN ship classification
2011/9/9
An algorithm for estimating the cross-bispectrum of an acoustic vector signal was formulated. Composed features of sound pressure and acoustic vector signals are extracted by the proposed algorithm an...
A Variable-Depth Green’s Function for Shelf Edge Tides
Shelf Edge Tides Variable-Depth Green’s Function
2009/2/13
The Green's function for a semi-infinite ocean with depth a function of distance from the boundary is developed numerically for the M2 frequency and with Coriolis frequency and depth profile appropria...
Rotary Empirical Orthogonal Function Analysis of Currents near the Oregon Coast
Empirical orthogonal function Oregon Coast
2009/1/19
Empirical orthogonal function (EOF) analysis in the frequency domain is extended to complex time series. EOFs are calculated from the eigenvectors of the band-averaged rotary cross-spectral matrix. Th...
Fetch Relations for Wind-Generated Waves as a Function of Wind-Stress Scaling
Canadian Atlantic Storms Program Wind-Stress Scaling Wind-Generated Waves
2008/12/30
We present the variation that results when fetch relations for wind-generated wave spectra are sealed by the friction velocity component in the dominant wave direction rather than the magnitude of the...
The Calculation of the Dynamic Sea Surface Topography and the Associated Flow Field from Altimetry Data：A Characteristic Function Method
quasi-stationary sea surface topography Dynamic Sea Surface Topography
2008/11/24
The quasi-stationary sea surface topography (QSST) and associated oceanic circulation is determined by means of a characteristic function technique. The method was originally implemented in an ideal s...
The Probability Density Function of Ocean Surface Slopes and Its Effects on Radar Backscatter
Probability Density Function Radar Backscatter Ocean Surface Slopes
2008/11/18
Based on Longuet-Higgins’s theory of the probability distribution of wave amplitude and wave period and on some observations, a new probability density function (PDF) of ocean surface slopes is derive...
A New Sea Spray Generation Function for Wind Speeds up to 32 m s−1
Sea Spray Generation Function Wind Speeds
2008/10/23
The sea spray generation function quantifies the rate at which spray droplets of a given size are produced at the sea surface. As such, it is important in studies of the marine aerosol and its optical...
The volume scattering function of natural bubble populations
volume scattering function natural bubble populations
2014/5/26
The volume scattering function (VSF) of natural bubble populations is (1) determined from Mie scattering theory, (2) measured by a newly designed volume scattering meter in the laboratory, and (3) inf...