Перегляд за Автор "Komendant, V. H."

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  • Ескіз
    Документ
    Influence of space weather effects on the upper atmosphere according to the drag of artificial earth satellites
    (Astroprint, 2014) Komendant, V. H.; Koshkin, Nikolay I.; Ryabov, Myhaylo I.; Sukharev, A. L.; Кошкин, Николай Иванович; Кошкін, Микола Іванович; Рябов, Михайло Іванович
    The applying of the method of timefrequency analysis allows to reveal the detailed structure of the manifestations of the influence of the space weather's state on the upper atmosphere of the Earth. The sensitive indicator of such changes are low-orbit satellites. The drag dynamics of five low–orbit satellites was viewed as indicators manifestations of the influence of space weather on the Earth upper atmosphere. The study period includes phases of decay and a long minimum of 23-rd solar cycle, phases of growth and maximum of 24-th solar cycle. In drag dynamics of all the analyzed satellites strongly marked regular drag effects with long periods (2-4 years) and short-period effects with periods less than one year. The satellites with orbital inclinations close to the equator shows periods with trend from 25 days to 1,3 months
  • Ескіз
    Документ
    Study of quasi–periodic variations in drag of artificial satellite during 23–24 solar cycles
    (Одеський національний університет імені І. І. Мечникова, 2015) Komendant, V. H.; Ryabov, Myhaylo I.; Sukharev, A. L.; Рябов, Михайло Іванович
    Apply of the method of time-frequency analysis allows to reveal the detailed structure of the manifestations of the influence of the state space weather on the upper atmosphere of the Earth. Sensitive indicators of such changes are low-orbit satellites. The dynamics of drag of nineteen low–orbit satellites was viewed. The study period includes phases of declining and a long minimum of 23rd solar cycle, phases of rise and maximum of 24th solar cycle. In dynamic of inhibition of all the analyzed satellite pronounced regular inhibition effects with extended periods of 2 – 6 years and short-period effects with periods less than one year. In the satellites: 00063, 00165, 25064, 00932 and 00746 – detected periods with trend from 25 – 28 days to 1 – 1.7 months.
  • Ескіз
    Документ
    The change indices of solar and geomagnetic activity and their influence on the dinamics of drag of artificial satellite
    (Одеський національний університет імені І. І. Мечникова, 2016) Komendant, V. H.; Koshkin, Nikolay I.; Ryabov, Myhaylo I.; Sukharev, A. L.; Кошкин, Николай Иванович; Кошкін, Микола Іванович; Рябов, Михайло Іванович
    The time-frequency and multiple regression analysis of the orbital parameter characterizing the drag of satellites on circular and elliptical orbits with different perigees and orbital inclinations in the atmosphere of the Earth was being conducted in 23-24 cycles of solar activity. Among the factors influencing braking dynamics of satellites were taken: W – Wolf numbers; Sp – the total area of sunspot groups of the northern and southern hemispheres of the Sun, F10.7 – the solar radio flux at 10,7 cm; E – electron flux with energies more than 0,6 MeV и 2 MeV; planetary, high latitude and middle latitude geomagnetic index Ap. In the atmospheric drag dynamics of satellites, the following periods were detected: 6–year, 2.1–year, annual, semi-annual, 27–days, 13– and 11–days. Similar periods are identified in indexes of solar and geomagnetic activity. Dependence of the periods of satellites motion on extremes of solar activities and space weather conditions was conducted.