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Izvestiya SFedU
Engineering sciences
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ISSN 1999-9429 print
ISSN 2311-3103 online
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  • HARDWARE AND SOFTWARE MEANS FOR DYNAMIC RECONFIGURATION OF A GROUP OF SMALL SPACE VEHICLES

    S.N. Emelyanov, S.N. Frolov, Е.А. Titenko, D.P. Teterin, А.P. Loktionov
    2024-08-12
    Abstract ▼

    The goal of the study is to automate the control of a group of nanosatellites in conditions of its
    variable number by updating its state based on sending and processing broadcast requests between
    nanosatellites and using the Transformer neural network. A neural network is needed to make predi ctions
    about the state of the spacecraft network. The problem of ensuring connectivity of a network of
    nanosatellites is studied, which comes down to the implementation of adaptive network control with
    assessment and prediction of the state of communication channels between pairs of devices based on a
    neural network. Dynamic reconfiguration and machine learning of a network of devices have been developed.
    Algorithmic tools have been defined for the initial training of a neural network and its subs equent
    additional training, taking into account the preprocessing of the original sparse or fully connected
    data sets about the network of devices. Upon completion of training on synthetic data, the created
    neural network is able to predict the quality of communication, taking into account line of sight, signal
    attenuation depending on distance and the state of the nanosatellite hardware platform. The developed
    software system performs deterministic reconfiguration based on the current state of the nanosatellite
    network and adaptive reconfiguration based on historical data by analyzing the hidden patterns of
    nanosatellite functioning using the Transformer neural network. To predict the quality of communication,
    a functional is used to connect the geodetic coordinates of pairs of satellites and the vectors of
    their states with the elements of the matrix of the quality of communication between nanosatellites with
    a given initial time, the value of the time interval, and the value of the sampling step of the measurement
    process. The use of neural networks implemented on GPUs made it possible to predict possible
    states of nanosatellites and carry out reconfiguration of the constellation ahead of schedule, including
    removing “problematic” nanosatellites from the network.

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