ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2010, Vol. 7, No. 1, pp. 209-214

Ionospheric radio signals propagation delays determination using three- dimensional assimilative ionospheric model

D.V. Solomentsev 1, V.O. Skripachev 2, A.V. Tertyshnikov 2, B.V. Khattatov3, V.U. Khattatov 1, Yu. A. Polushkovsky 2
1 Central Aerological Observatory, Dolgoprudny, Moscow Region, 3 Pervomaiskaya str
2 S&T center «Cosmonit» JSC «RSS», Moscow, 84/32 Profsoyuznaya str
3 Fusion Numerics Inc, PO Box 4098, Boulder, Colorado, 80302
The possibilities of usage a three- dimensional assimilative ionospheric model for determination of signal propagation delays are discussed.
The most important advantages of the model are shown. Also we provide the results of model calculations for distributions of electron concentrations in ionosphere. The calculations were made using assimilation of Total Electron Content from GPS ground- based stationary receivers in Western Europe region. It is shown, in addition, that the model results are sensitive to ionospheric disturbances, including local variations.
One of the possible practical implementations for described assimilative model is operational calculations of satellite radio signal propagation delays for navigational satellites of GLONASS/ GPS. The suggested approach allows the significant increase of precision in delays calculus, which is very important for navigational applications.
Keywords: ionosphere, assimilative 3D model, satellite signal delays determination
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