The speckle-interferometric images modelling of artificial Earth satellites in problems of near-Earth astronomy
Author:
Aleshin Vladimir P.,Grishin Eugene A.,Ivlev Oleg A.,Novgorodtsev Dmitry D.,Shargorodsky Victor D.
Abstract
Abstract
The article represents the results of efficiency estimation for perspective observation facilities of near-Earth astronomy in terms of the AES (artificial Earth’s satellite) optical images obtaining and quality. A mathematical method for modeling optical images based on the induced virtual environment is proposed . A speckle interferometric image registration scheme and bispectral processing are reviewed. Upon modelling, the real speckle interferometric images of stars have been used as scattering functions; the AES orbits and geometry have been set in reliance on the real AES orbits and 3D-shapes. Additionally, photon and readout noises have been modelled. A large set of different variants of the AES orbits and 3D-shapes is reviewed.Anon-linear distortion problem is analyzed. The modelling has been performed under various atmosphere turbulence conditions (2”, 4”). The following characteristics have been estimated: number of frames to accumulate depending on the AES orbit and shape, noise intensity, type and parameters of bispectral processing, energy characteristics.
Publisher
Walter de Gruyter GmbH
Subject
Space and Planetary Science,Astronomy and Astrophysics
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