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Intervals to Update the Data of the Moon, the Sun and Planet Positions for the Ephemeris Support of the GLONASS System

Transactions of IAA RAS, issue 42, 57–63 (2017)

Keywords: ephemerides of the Moon, the Sun and planets, ephemeris support of the GLONASS system, navigational satellite ephemerides, navigation equipment.

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Abstract

The GLONASS system requires that its ephemeris support includes the data about the positions of the bodies which disturb the orbits of navigational satellites. The current ephemerides of the Moon, the Sun and the planets are DE/LE (USA), INPOP (France) and EPM (Russia). All of them have the accuracy necessary to predict the ephemerides of navigational satellites of the Earth, including the GLONASS satellites. The ephemeris data are presented in the form of files with coefficients of Chebyshev approximating polynomials for the coordinates and velocities of the planets, the Sun and the Moon. However, each realization of these ephemerides is calculated using a fixed set of observational data and loses in accuracy of the coordinates of the perturbing bodies outside the observational interval. The speed of the accuracy degradation in the Moon, the Sun and the planets’ positions is compared in a few DE/LE versions. The intervals between updates of the ephemeris of the Moon, the Sun and the planets are recommended for the GLONASS support and autonomous orbit determination of the navigation satellites.

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M. V. Vasilyev, E. I. Yagudina. Intervals to Update the Data of the Moon, the Sun and Planet Positions for the Ephemeris Support of the GLONASS System // Transactions of IAA RAS. — 2017. — Issue 42. — P. 57–63.

@article{vasilyev2017,
  abstract = {The GLONASS system requires that its ephemeris support includes the data about the positions of the bodies which disturb the orbits of navigational satellites. The current ephemerides of the Moon, the Sun and the planets are DE/LE (USA), INPOP (France) and EPM (Russia). All of them have the accuracy necessary to predict the ephemerides of navigational satellites of the Earth, including the GLONASS satellites. The ephemeris data are presented in the form of files with coefficients of Chebyshev approximating polynomials for the coordinates and velocities of the planets, the Sun and the Moon. However, each realization of these ephemerides is calculated using a fixed set of observational data and loses in accuracy of the coordinates of the perturbing bodies outside the observational interval. The speed of the accuracy degradation in the Moon, the Sun and the planets’ positions is compared in a few DE/LE versions. The intervals between updates of the ephemeris of the Moon, the Sun and the planets are recommended for the GLONASS support and autonomous orbit determination of the navigation satellites.},
  author = {M.~V. Vasilyev and E.~I. Yagudina},
  issue = {42},
  journal = {Transactions of IAA RAS},
  keyword = {ephemerides of the Moon, the Sun and planets, ephemeris support of the GLONASS system, navigational satellite ephemerides, navigation equipment},
  pages = {57--63},
  title = {Intervals to Update the Data of the Moon, the Sun and Planet Positions for the Ephemeris Support of the GLONASS System},
  url = {http://iaaras.ru/en/library/paper/1745/},
  year = {2017}
}

TY  - JOUR
TI  - Intervals to Update the Data of the Moon, the Sun and Planet Positions for the Ephemeris Support of the GLONASS System
AU  - Vasilyev, M. V.
AU  - Yagudina, E. I.
PY  - 2017
T2  - Transactions of IAA RAS
IS  - 42
SP  - 57
AB  - The GLONASS system requires that its ephemeris support includes the
data about the positions of the bodies which disturb the orbits of
navigational satellites. The current ephemerides of the Moon, the Sun
and the planets are DE/LE (USA), INPOP (France) and EPM (Russia). All
of them have the accuracy necessary to predict the ephemerides of
navigational satellites of the Earth, including the GLONASS
satellites. The ephemeris data are presented in the form of files
with coefficients of Chebyshev approximating polynomials for the
coordinates and velocities of the planets, the Sun and the Moon.
However, each realization of these ephemerides is calculated using a
fixed set of observational data and loses in accuracy of the
coordinates of the perturbing bodies outside the observational
interval. The speed of the accuracy degradation in the Moon, the Sun
and the planets’ positions is compared in a few DE/LE versions. The
intervals between updates of the ephemeris of the Moon, the Sun and
the planets are recommended for the GLONASS support and autonomous
orbit determination of the navigation satellites.
UR  - http://iaaras.ru/en/library/paper/1745/
ER  -