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Automatic identification of diatoms using descriptors obtained in the plane of frequencies
(2018-09)
Diatoms are unicellular algae that have as characteristic to be composed mainly of silice. Currently, its study has become relevant due to its multiple applications that include forensic medicine, palaeoenvironmental ...
Photonic fractional Fourier transformer with a single dispersive device
(Optical Society Of America, 2013-04)
In this work we used the temporal analog of spatial Fresnel diffraction to design a temporal fractional Fourier transformer with a single dispersive device, in this way avoiding the use of quadratic phase modulators. We ...
Fractional Fourier transform
(Wolfram Demonstration Project, 2016)
Fractional Fourier transform
(Wolfram Demonstration Project, 2011)
Weighted Fourier–Laplace transforms in reproducing kernel Hilbert spaces on the sphere
(Academic PressElsevierSan Diego, 2014-03-15)
We study the action of a weighted Fourier–Laplace transform on the functions in the reproducing kernel Hilbert space (RKHS) associated with a positive definite kernel on the sphere. After defining a notion of smoothness ...
Fractional Fourier analysis of random signals and the notion of α -Stationarity of the Wigner-Ville distribution
(2013)
In this paper, a generalized notion of wide-sense α-stationarity for random signals is presented. The notion of stationarity is fundamental in the Fourier analysis of random signals. For this purpose, a definition of the ...