This paper is concerned with the design and study of an adaptive formation—maintaining control of two satellites in low-Earth orbits. The purpose of the control is to maintain a projective circular orbit. It is assumed that one of the spacecraft is not controllable and its ballistic coefficient is unknown. The other spacecraft is controllable, and it is possible to control both its effective cross section area and orbital motion by using a high-thrust engine. Artificial neural networks are used to approximate the control functions and adapt to the uncertain ballistic coefficient of the uncontrolled spacecraft. Implementation, architecture, learning processes, and quality evaluation scheme of the neural networks are described in detail. The procedure for real-time adaptation to an unknown parameter of an uncontrolled vehicle is given. It is shown that the real-time adaptation is possible within an acceptable time interval. The results of the adaptation to two parameters—the ballistic coefficient and the atmospheric density—are also presented. The simulation is performed within the context of the perturbed two-body problem that takes into account the atmospheric drag and the second zonal harmonic effect.
Adaptive Neural Formation-Keeping Control for Satellites in a Low-Earth Orbit
Cosmic Res
Cosmic Research ; 59 , 6 ; 501-516
2021-11-01
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
spacecraft formation flying , low-Earth orbit , neurocontrol , adaptation , neural network , machine learning Physics , Astronomy, Astrophysics and Cosmology , Astrophysics and Astroparticles , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) , Physics and Astronomy
Passive Orbit Acquisition and Keeping for Clusters of Satellites in Low Earth Orbit
British Library Conference Proceedings | 2000
|Orbit and formation control for low-earth-orbit gravimetry drag-free satellites
Tema Archiv | 2015
|Orbit and formation control for low-earth-orbit gravimetry drag-free satellites
Online Contents | 2015
|Orbit and formation control for low-earth-orbit gravimetry drag-free satellites
SAGE Publications | 2015
|