Науковий вісник НГУ

Application of the wavelet transformation theory in the algorithm for constructing a quasigeoid model

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Category: Content №4 2022

Last Updated on 29 August 2022

Published on 30 November -0001

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Authors:

V.Turekhanova, orcid.org/0000-0001-8915-9242, al-Farabi Kazakh National University, Almaty, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

S.Saliy, orcid.org/0000-0003-3590-8062, Border Academy of the National Security Committee, Almaty, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

M.Kudaibergenov, orcid.org/0000-0001-8316-8949, al-Farabi Kazakh National University, Almaty, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Y.Zhalgasbekov, orcid.org/0000-0001-9503-776X, al-Farabi Kazakh National University, Almaty, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

G.Jangulova, orcid.org/0000-0002-7866-1031, al-Farabi Kazakh National University, Almaty, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2022, (4): 123 - 129

https://doi.org/10.33271/nvngu/2022-4/123

Abstract:

Purpose. To investigate the interaction of geodesic and normal altitude indicators according to quasigeoid data, the joint use of space measurements and those performed on the Earths surface in the implementation of geodetic tasks. In this article, the task is to create a calculation algorithm for further research on the quasigeoid model and the application of the model in solving geodetic problems.

Methodology. Reliable determination of the height anomaly requires great accuracy, therefore, the theory of wavelet-transformation was used in the model of the variant of space technologies as an alternative to the laborious leveling of the Earths surface, which characterizes the actual fluctuations from the normal of the Earths gravitational field, when calculating the mean square deviations of the plumb line is an urgent task.

Findings. A block diagram of the calculation algorithm has been compiled using a software package to solve the boundary problem of physical geodesy, in which the Earths surface is subject to modern space measurements.

Originality. The use of wavelet analysis for processing information from satellite data in geodesy improves the results of image classification, and the coefficients of the wavelet transformation can be used as indicators for recognizing the coordinates of points with high accuracy.

Practical value. Application of the theory of wavelet transformations as a powerful mathematical tool for solving problems of geodetic information, data compression and recovery, increasing computing performance, encoding information.

Keywords: physical geodesy, coordinate systems, gravitational field, geoid, quasigeoid, gravimetric height, modeling, coordinate transformation

References.

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