A Study of Vibrations of Space Station Structure Elements on the Basis of Video Information

• Published in: Cosmic research Vol. 59; no. 3; pp. 183 - 198
• Main Authors: Beklemishev, N. D., Boguslavskii, A. A., Belyaev, M. Yu, Volkov, O. N., Sazonov, V. V., Sokolov, S. M., Sofinskii, A. N.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-05-2021; Springer Nature B.V
• Subjects: Astronomy; Astrophysics and Astroparticles; Astrophysics and Cosmology; International Space Station; Physics; Physics and Astronomy; Sequences; Space Exploration and Astronautics; Space Sciences (including Extraterrestrial Physics; Space station structures; Space stations; Spectral analysis; Spectrum analysis; Structural members; Time series
• ISSN: 0010-9525; 1608-3075
• DOI: 10.1134/S0010952521030023

The results of the
Sreda–MKS
space experiment showed that visual data on the vibrations of the
ISS
structural elements allow one to acquire quantitative characteristics of these vibrations. Such characteristics were found as a result of the analysis of time series obtained by tracing some objects in the
ISS
structure on video sequences. The numerical data are the vertical and horizontal coordinates of the selected point of the structural element in the frame expressed in pixels. Analysis of the time series allows us to reconstruct the actual dependence of these coordinates on time. In some cases, this dependence is oscillatory in nature and can be represented as the sum of a finite number of harmonics, the amplitudes and frequencies of which are determined by means of spectral analysis.