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Current Activities of MMC SSTF in the EOP Evaluation Field

S. L. Pasynok, I. V. Bezmenov, I. Yu. Ignatenko, V. S. Ivanov, E. N. Tsyba, V. E. Zharov

Transactions of IAA RAS, issue 57, 28–33 (2021)

Keywords: EOP, VLBI, GNSS, SLR, LLR, combination, SSTF

Abstract

The operative Earth’s orientation parameters (EOP) evaluation activity has been carried out in the Main Metrological Center of State Service for Time, Frequency and EOP evaluation (MMC SSTF) from time of the FSUE VNIIFTRI creating (from 1954). The role of VNIIFTRI as MMC SSTF is stated by government decree №225. Besides this, VNIIFTRI participates in SSTF activity as a source of measurable data and as an Analysis Center (AC). In 2020 combined EOP values were formed by combination of nine independent EOP series which were obtained in IAA RAS, JSC TSNIIMASH and MMC SSTF. The using of IAA RAS VGOS antennas data allows significantly increased the accuracy of combined UT1 values and accuracy of UT1 prediction. The formation of operative EOP information by combination and dissemination of EOP information are provided in daily mode. Besides this, VNIIFTRI give the contribution in national and international databases by the transfer of GNSS and SLR data of observations which are carried out in VNIIFTRI and its branches located in Novosibirsk, Irkutsk, Khabarovsk and Petropavlovsk-Kamchatsky. The processing of geodetic technics (GNSS, SLR and VLBI) observations data is providing in MMC SSTF in daily mode for EOP evaluation purpose. A number of pilot activities are under way to improve methods and tools for processing and analyzing measurement data of various types is carried out in MMC SSTF. The evaluation of orbits and corrections of spacecraft clocks, as well as the processing of satellite altimetric measurements are also carried out. The work on the EOP evaluation is carried out at a high scientific and technical level. In order to improve accuracy and efficiency of EOP evaluation, work is planned both to improve methods and tools for processing and analyzing measurement data, and to improve the equipment of measuring sites. In general, the paper is for informational purposes and is written to overview the works carried out in 2020s and early 2021 at the MMC SSTF in terms of determining the EOP.

Citation

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S. L. Pasynok, I. V. Bezmenov, I. Yu. Ignatenko, V. S. Ivanov, E. N. Tsyba, V. E. Zharov. Current Activities of MMC SSTF in the EOP Evaluation Field // Transactions of IAA RAS. — 2021. — Issue 57. — P. 28–33.

@article{pasynok2021,
  abstract = {The operative Earth’s orientation parameters (EOP) evaluation activity has been carried out in the Main Metrological Center of State Service for Time, Frequency and EOP evaluation (MMC SSTF) from time of the FSUE VNIIFTRI creating (from 1954). The role of VNIIFTRI as MMC SSTF is stated by government decree №225. Besides this, VNIIFTRI participates in SSTF activity as a source of measurable data and as an Analysis Center (AC). 
In 2020 combined EOP values were formed by combination of nine independent EOP series which were obtained in IAA RAS, JSC TSNIIMASH and MMC SSTF. The using of IAA RAS VGOS antennas data allows significantly increased the accuracy of combined UT1 values and accuracy of UT1 prediction. The formation of operative EOP information by combination and dissemination of EOP information are provided in daily mode. Besides this, VNIIFTRI give the contribution in national and international databases by the transfer of GNSS and SLR data of observations which are carried out in VNIIFTRI and its branches located in Novosibirsk, Irkutsk, Khabarovsk and Petropavlovsk-Kamchatsky. The processing of geodetic technics (GNSS, SLR and VLBI) observations data is providing in MMC SSTF in daily mode for EOP evaluation purpose. 
A number of pilot activities are under way to improve methods and tools for processing and analyzing measurement data of various types is carried out in MMC SSTF. The evaluation of orbits and corrections of spacecraft clocks, as well as the processing of satellite altimetric measurements are also carried out. 
The work on the EOP evaluation is carried out at a high scientific and technical level. In order to improve accuracy and efficiency of EOP evaluation, work is planned both to improve methods and tools for processing and analyzing measurement data, and to improve the equipment of measuring sites.
In general, the paper is for informational purposes and is written to overview the works carried out in 2020s and early 2021 at the MMC SSTF in terms of determining the EOP.},
  author = {S.~L. Pasynok and I.~V. Bezmenov and I.~Yu. Ignatenko and V.~S. Ivanov and E.~N. Tsyba and V.~E. Zharov},
  doi = {10.32876/ApplAstron.57.28-33},
  issue = {57},
  journal = {Transactions of IAA RAS},
  keyword = {EOP, VLBI, GNSS, SLR, LLR, combination, SSTF},
  pages = {28--33},
  title = {Current Activities of MMC SSTF in the EOP Evaluation Field},
  url = {http://iaaras.ru/en/library/paper/2088/},
  year = {2021}
}

TY  - JOUR
TI  - Current Activities of MMC SSTF in the EOP Evaluation Field
AU  - Pasynok, S. L.
AU  - Bezmenov, I. V.
AU  - Ignatenko, I. Yu.
AU  - Ivanov, V. S.
AU  - Tsyba, E. N.
AU  - Zharov, V. E.
PY  - 2021
T2  - Transactions of IAA RAS
IS  - 57
SP  - 28
AB  - The operative Earth’s orientation parameters (EOP) evaluation
activity has been carried out in the Main Metrological Center of
State Service for Time, Frequency and EOP evaluation (MMC SSTF) from
time of the FSUE VNIIFTRI creating (from 1954). The role of VNIIFTRI
as MMC SSTF is stated by government decree №225. Besides this,
VNIIFTRI participates in SSTF activity as a source of measurable data
and as an Analysis Center (AC).   In 2020 combined EOP values were
formed by combination of nine independent EOP series which were
obtained in IAA RAS, JSC TSNIIMASH and MMC SSTF. The using of IAA RAS
VGOS antennas data allows significantly increased the accuracy of
combined UT1 values and accuracy of UT1 prediction. The formation of
operative EOP information by combination and dissemination of EOP
information are provided in daily mode. Besides this, VNIIFTRI give
the contribution in national and international databases by the
transfer of GNSS and SLR data of observations which are carried out
in VNIIFTRI and its branches located in Novosibirsk, Irkutsk,
Khabarovsk and Petropavlovsk-Kamchatsky. The processing of geodetic
technics (GNSS, SLR and VLBI) observations data is providing in MMC
SSTF in daily mode for EOP evaluation purpose.   A number of pilot
activities are under way to improve methods and tools for processing
and analyzing measurement data of various types is carried out in MMC
SSTF. The evaluation of orbits and corrections of spacecraft clocks,
as well as the processing of satellite altimetric measurements are
also carried out.   The work on the EOP evaluation is carried out at
a high scientific and technical level. In order to improve accuracy
and efficiency of EOP evaluation, work is planned both to improve
methods and tools for processing and analyzing measurement data, and
to improve the equipment of measuring sites.  In general, the paper
is for informational purposes and is written to overview the works
carried out in 2020s and early 2021 at the MMC SSTF in terms of
determining the EOP.
DO  - 10.32876/ApplAstron.57.28-33
UR  - http://iaaras.ru/en/library/paper/2088/
ER  -