Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2024, Vol. 21, No. 5, pp. 75-82
Reconstruction of rotational motion of the ISOI (SXC3-219) small spacecraft for Earth remote sensing from onboard measurements
A.V. Sedelnikov
1 , R.V. Skidanov
1, 2 , M.E. Bratkova
1 , E.S. Khnyryova
1 , U.V. Maslova
1 , M.A. Ivanushkin
1, 2 , M.R. Mordanov
1 1 Samara National Research University, Samara, Russia
2 Image Processing Systems Institute — Samara, NRC “Kurchatov Institute”, Samara, Russia
Accepted: 18.09.2024
DOI: 10.21046/2070-7401-2024-21-5-75-82
The work reconstructs the rotational motion of the small Earth remote sensing spacecraft ISOI (SXC3-219) in order to increase the efficiency of target tasks implementation. For such a reconstruction, measurement data of the components of the induction vector of the Earth’s magnetic field, as well as data from angular velocity vector meters, are used. Various modes of orbital motion of a small spacecraft are considered: uncontrolled flight mode, motion control mode using magnetic actuators by the –Bdot algorithm, and controlled mode using a set of control flywheel engines. Discrete measurement data of the components of the angular velocity vector were reconstructed by the Kotelnikov series. Then the components of the angular acceleration vector of the small spacecraft were approximated. Next, using Euler’s dynamic equations, the values of external disturbing influences on rotational motion were assessed. Adjusting the control laws of a small spacecraft taking into account the obtained estimates can improve the efficiency of solving target remote sensing problems.
Keywords: rotational motion, small spacecraft, Earth remote sensing
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