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Proceedings Paper

Adaptive model for total electron content in the ionosphere
Author(s): A. D. Bazarzhapov; V. V. Chernukhov; M. A. Mezhetov
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Paper Abstract

Adaptive regional total electron content space distribution model, based on the data of the IGS (International GPS Service for Geophysics) international network of GPS- stations is proposed in the article. The method of the spherical harmonic analysis with the selection of the spectrum of approximating harmonic with the greatest contribution was applied at creation of the model. The method essence consists in a such spherical harmonics series spectrum selection when the harmonics, with orthogonal projection exceeding an input data errors level appropriate number of times, are used in an approximating function. The comparative estimation of results obtained by the least squares process and throug offered method has executed. The usage of the least squares process when solving the problem of the spherical harmonics analysis at reconstructing the space distribution of the total electronic contents because of the poor conditionality of normal equations system, results in considerable errors of approximating strongly dependent on selected the length of series. The selection of the spherical harmonics series spectrum with the greatest contribution allows to regularize the normal equations system solution and to increase its accuracy and stability. The model can be used to increase the accuracy of detecting satellite radionavigation system users in a relative navigation mode, at ionospheric monitoring etc.

Paper Details

Date Published: 28 February 2002
PDF: 6 pages
Proc. SPIE 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, (28 February 2002); doi: 10.1117/12.458497
Show Author Affiliations
A. D. Bazarzhapov, Irkutsk Military Aviation Institute (Russia)
V. V. Chernukhov, Irkutsk Military Aviation Institute (Russia)
M. A. Mezhetov, Irkutsk Military Aviation Institute (Russia)

Published in SPIE Proceedings Vol. 4678:
Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Gelii A. Zherebtsov; Gennadii G. Matvienko; Viktor A. Banakh; Vladimir V. Koshelev, Editor(s)

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