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Ways for Improving the Accuracy of Measuring the Parameters of the Earth’s Gravitational Field Using an Orbital Spacecraft Constellation

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Abstract

We presented the analysis results of the possibilities for increasing the spatial and temporal resolution of the existing models of the Earth’s gravitational field (EGF) by optimizing the orbital parameters (semi-major axis and inclination) of a constellation of spacecraft (SC) in a near-Earth orbit. As a result of numerical modeling, the spacecraft orbit elements were found. They cover 100% of the Earth’s surface over a 30-day interval with sub-satellite paths with an angular resolution of 1° × 1°, which is almost 4 times higher than the angular resolution of the monthly EGF models of the GRACE mission.

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Notes

  1. http://www.csr.utexas.edu/grace/

  2. https://heavens-above.com/orbit.aspx?satid=C43477

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Funding

This work was carried out within the framework of the Interdisciplinary Scientific and Educational School of Moscow State University “Fundamental and Applied Space Research” and was supported by the Russian Foundation for Basic Research (project no. 19-29-11008).

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Authors and Affiliations

  1. Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia

    V. K. Milyukov, A. I. Filetkin & A. S. Zhamkov

  2. Physics Faculty, Moscow State University, 119234, Moscow, Russia

    A. I. Filetkin

Authors
  1. V. K. Milyukov
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  2. A. I. Filetkin
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  3. A. S. Zhamkov
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Correspondence to V. K. Milyukov.

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Translated by E. Seifina

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Milyukov, V.K., Filetkin, A.I. & Zhamkov, A.S. Ways for Improving the Accuracy of Measuring the Parameters of the Earth’s Gravitational Field Using an Orbital Spacecraft Constellation. Astron. Rep. 65, 331–341 (2021). https://doi.org/10.1134/S106377292104003X

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  • DOI: https://doi.org/10.1134/S106377292104003X

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