DEPARTAMENTO SISTEMAS COMPLEJOS Y ALTAS ENERGÍAS

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https://nuclea.cnea.gob.ar/handle/20.500.12553/5208

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Examinando DEPARTAMENTO SISTEMAS COMPLEJOS Y ALTAS ENERGÍAS por Autor "Cabrera, Octavio"

Mostrando 1 - 2 de 2
  • Miniatura
    ÍtemAcceso Abierto
    Functional integral approach to the transfer function of a stochastic scattering channel
    (Taylor & Francis, 2020) Cabrera, Octavio; Zanette, Damian Horacio
    We apply the formalism of functional integration to the calculation of the transfer function of a stochastic scattering channel formed by stationary, non-interacting point scatterers. The channel is described through a scattering amplitude density, defined over space, whose random component is characterized by a functional probability distribution. This random component induces in turn a probability distribution for the scattering transfer function, which we compute by means of functional integration in the case of Gaussian distributions. Some geometric configurations relevant to radar operation are worked out, as well as the statistical properties of the transfer function in the large-frequency limit. Extensions of the formulation in order to include scattering phase shifts, i.e. complex scattering amplitudes, and to consider non-Gaussian probability distributions are outlined.
  • Miniatura
    ÍtemAcceso Abierto
    Stochastic effects on the bistatic transfer function of a planar scatterer distribution
    (Taylor & Francis, 2020) Gavier, Ignacio; Zanette, Damián Horacio; Cabrera, Octavio
    We evaluate the effects of several stochastic factors on signal transmission through a planar distribution of stationary scatterers, with non-collocated transmitter and receiver (bistatic configuration). The transmission channel is described by means of its transfer function, which –as a result of randomness in the scatterer distribution– fluctuates around its expectation value. Specifically, we consider randomness in the scatterer positions (both on the plane and in height), in their radar cross sections, and in the scattering phases. Our analytical results provide a quantitative relation between the parameters that characterize random components of each kind, and the fluctuations that alter the transfer function.