Search academic texts

Information × Registration Number 0222U001919, 0120U102487 , R & D reports Title Monitoring of parameters for objects of natural and artificial origin in near-Earth space by optical and radio methods. popup.stage_title Head Maigurova Nadiia V., Кандидат фізико-математичних наукShulha Oleksandr V., Доктор фізико-математичних наук Registration Date 04-02-2022 Organization Mykolaiv Astronomical Observatory popup.description2  In 2021, with the help of three optical telescopes at the Research Institute «Mykolaiv Astronomical Observatory» namely FRT (Fast Robotic Telescope), KT-50, MEZON, 166 geostationary objects from the catalog of the US Department of Defense (NORAD) were observed. For the period from 02.03.2021 to 31.12.2021, we received 2400 trackings and 131801 frames. The total exposure time is 228 hours. The equatorial positions of all geostationary objects at the time of observation were calculated. The standard error of positions in both coordinates is: ±0.78" for KT-50, ±0.68" for FRT, ±1.06 " for MESON. In 2021, with the help of the KT-50 and MEZON telescopes, 19 satellites were observed in highly eccentric orbits. 59 nights of observations were conducted, 8685 equatorial positions were obtained. The standard error of the positions in both coordinates is: ± 0.7" for KT-50, ±0.9" for MESON. Most of these satellites do not have orbit elements at the catalog on the website of US Department of Defense. In 2021, the radio interferometric network for monitoring of orbital positions of geostationary telecommunications satellites consisted of 10 stations in Ukraine, Latvia and Italy. The network has simultaneously observed three satellites Eutelsat-13B, 13C and 13E since May 29, 2021. In 2021, about 2.5 TB of data was accumulated. According to these data, the orbital elements for the Eutelsat-13B, 13C and 13E satellites were calculated for 310, 328 and 164 days, respectively. In 2021, a reference signal synthesizer of the Doppler station receiver was completed to measure frequency of signals emitted by low-orbit satellites. In 2021, software was developed that allowed us to obtain internal errors of frequency and time measurements. The relative error of the frequency is 10-10, which at the operating frequencies of the station 430-440 MHz in terms of the radial velocity of satellites is 4 cm/s. The error in determining the time does not exceed 30 ms. About 2 TB of primary signal amp Product Description popup.authors Bushuev Felix I. Kaliuzhnyi Mykola P. Kryuchkovsky Vitaly F. Kulichenko Mykola O. popup.nrat_date 2022-03-09 Close