Estimating the quality of absolute gravimeters based on a comparison conducted by Roskadastr in 2023

Geodesy

UDC:

528.27

DOI:

10.22389/0016-7126-2026-1031-5-23-30

1 Yushkin V.D.

2 Mezhenova I.I.

Year:

2026

№:

1031

Pages:

23-30

Roskadastr, PLC

1,

2,

3,

4,

5,

FSUE «All-Russian Scientific Research Institute of Physical-Technical and Radiotechnical Measurements» (FSUE «VNIIFTRI»)

6,

Lomonosov Moscow State University (MSU)

7,

Kazan Federal University

8,

9,

Abstract:

The authors present the results of comparing absolute gravimeters performed in Moscow in September 2023 at the laboratory owned by Roskadastr. It involved five absolute units from four different organizations of three ministries. All the devices were different in design, which is undoubtedly an advantage in terms of the quality of the measured value – the free fall acceleration. Despite the differences, all the said tools showed that they could work within their factory drawbacks and confidently determine the acceleration of gravity with an error of the first mcGals. The results are presented in graphs and tables. The comparisons show that the Russian gravimeters of the GABL series at points with a low level of seismic noise are comparable in quality to the American ones of the FG5 series. The factory error of GABL (± 4,5 mcGals) is twice as high as that of FG5 (±2,3 mcGals), due to the outdated design of the seismic filter

Keywords:

barometer, comparisons of absolute gravimeters, free fall acceleration, frequency standard, gravity, gravity field measurements, optical laser standard, relative gravimeter, tidal gravimeter

Thanks to the management and employees of Roskadastr for organizing and conducting the comparisons. They were carried out within the framework of the topics of the participating agencies, including of MSU and KFU within the framework the state assignment

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Citation:

Yushkin V.D.,

Mezhenova I.I.,

(2026) Estimating the quality of absolute gravimeters based on a comparison conducted by Roskadastr in 2023. Geodesy and cartography = Geodeziya i Kartografiya, 87(5), pp. 23-30. (In Russian). DOI: 10.22389/0016-7126-2026-1031-5-23-30