D.N. Goldobin, V.F. Kanushin, I.G. Ganagina, I.A. Inzhevatov

FSBEI of HE “Siberian State University of Geosystems and Technologies” (SSUGT), Novosibirsk, Russia;
phis.geo.sgga@gmail.com,
kanushinvf43.work.ssg@gmail.com,
gam0209@yandex.ru,
inzhewatov.iw@yandex.ru

Al’manac of Modern Metrology № 1 (41) 2025, pages 161–169

Abstract. Various methods for constructing a global quasigeoid model exists. Among them, the leading place is occupied by the well-known solutions of M.S. Molodensky and V.V. Brovar, obtained using integral equations for the density of a simple layer. In this paper, the results of the implementation of a third-order gradient solution to build a global quasigeoid model based on the analytical continuation of free-air gravity anomalies from the physical surface of the Earth to a reference spherical surface passing through the calculated point, using a Taylor series, are presented.

Keywords: digital models of vertical gradients of gravity anomalies, quasigeoid model, GNSS leveling, fast Fourier transform.

Full texts of articles are available only in Russian in printed issues of the magazine.

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