Development of the global geoid model based on the algorithm of one-dimensional spherical Fourier transform

E. M. Mazurova; V. F. Kanushin; I. G. Ganagina; D. N. Goldobin; V. V. Bochkareva; N. S. Kosarev; A. M. Kosareva

doi:10.1134/S2075108716030123

Development of the global geoid model based on the algorithm of one-dimensional spherical Fourier transform

Authors: Mazurova E.M.¹, Kanushin V.F.¹, Ganagina I.G.¹, Goldobin D.N.¹, Bochkareva V.V.¹, Kosarev N.S.¹, Kosareva A.M.¹
Affiliations:
1. Siberian State University of Geosystems and Technologies
Issue: Vol 7, No 3 (2016)
Pages: 269-276
Section: Article
URL: https://journal-vniispk.ru/2075-1087/article/view/203887
DOI: https://doi.org/10.1134/S2075108716030123
ID: 203887

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Abstract

An algorithm for constructing a model of the global geoid with zero-order approximation accuracy is considered. The algorithm is based on the one-dimensional spherical fast Fourier transform (FFT). It is 2.5 orders faster than those using the conventional discrete transform, and four orders, as compared with those using the numerical integration method. The algorithm was tested on the new Earth gravitational model EGM2008 published by the U.S. National Geospatial-Intelligence Agency (NGA).