Перегляд за автором "Choliy, V.Ya."

Сортувати за: Порядок: Результатів:

  • Determination of the reference frames deflections from optical observations of GNSS satellites 
    Choliy, V.Ya.; Zhaborovskyy, V.P.; Taradiy, V.; Rykhlova, L. (Advances in Astronomy and Space Physics, 2011)
    Optical observations of navigation satellites were carried out at Terskol observatory during 2007-2010 with the aim to determine the deffection angles between GPS and GLONASS dynamical reference frames. There were three ...
  • Earth's pole coordinates determined from Lageos-1/2 laser ranging 
    Zhaborovskyy, V.P.; Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2014)
    The Earth's pole coordinates, obtained from satellite laser ranging data of Lageos-1 and Lageos-2 are presented. The procedure, used models and algorithms are described. Results are compared with similar series from IERS database.
  • Formal estimation of the random component in global maps of total electron content 
    Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2016)
    Random component of the total electron content (TEC) maps, produced by global navigation satellite system processing centres, was analysed. Helmert transform (HT) and two-dimension singular spectrum analysis (2dSSA) were ...
  • KyivGeodynamics++: software for processing satellite laser ranging data 
    Choliy, V.Ya.; Zhaborovskyy, V.P. (Advances in Astronomy and Space Physics, 2011)
    We present the software package KyivGeodynamics++ intended for processing satellite laser ranging data. Review of architecture, the main algorithms, results of the first tests are presented.
  • On the comparison of fundamental numerical ephemerides 
    Tkachuk, V.V.; Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2013)
    We present the results of our comparison of three main numerical ephemerides (DELE, INPOP, EPM) for the determination of precision and errors of their dynamical coordinate systems. It was shown that all of them have ...
  • On the extension of Helmert transform 
    Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2014)
    The article deals with the method of comparison of the coordinate systems used by two quite different scientific disciplines: stellar astronomy and the geodesy. Geodesic Helmert transform is analysed along with a series ...
  • Parametric modeling of global TEC fields 
    Prokhorenkov, A.S.; Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2012)
    We applied the autoregressive moving average statistical modelling to analysis and forecasting of the global Total Electron Content maps. Autoregressive moving average is a parametric time series and fields modelling method, ...
  • Telescope inaccuracy model based upon satellite laser ranging data 
    Zhaborovskyy, V.P.; Pap, V.O.; Medvedsky, M.M.; Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2013)
    In this paper, a new approach to constructing a telescope pointing model is described. Procedures of data collection, data processing, and model construction are presented. Telescope encoder countings, obtained during ...
  • The discrete dipole approximation code DDscat.C++: features, limitations and plans 
    Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2013)
    We present a new freely available open-source C++ software for numerical solution of the electromagnetic waves absorption and scattering problems within the Discrete Dipole Approximation paradigm. The code is based upon ...