DOI 10.17586/0021-3454-2023-66-7-576-584
UDC 519.642; 550.388.2
PRELIMINARY PROCESSING OF DATA FROM A SATELLITE NAVIGATION RECEIVER IN THE PROBLEM OF THREE-DIMENSIONAL UPPER IONOSPHERE TOMOGRAPHY
Samara University, Inter-University Department of the Space Researches; Research Laboratory 102 for Perspective Fundamental and Applied Space Research Based on Nanosatellites; Engineer-Programmer
P. N. Nikolaev
Samara National Research University. Laboratory "Promising fundamental and applied space research based on nanosatellites"; senior researcher
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Reference for citation: Titov N. S., Nikolaev P. N. Preliminary processing of data from a satellite navigation receiver in the problem of three-dimensional upper ionosphere tomography. Journal of Instrument Engineering. 2023. Vol. 66, N 7. P. 576—584 (in Russian). DOI: 10.17586/0021-3454-2023-66-7-576-584.
Abstract. The problem of three-dimensional tomography of the upper ionosphere based on the signals of global navigation satellite systems obtained by the navigation receiver of a low-orbit satellite is considered. A method for preliminary processing of data from a satellite navigation receiver is presented, which consists in predicting the coordinates of the centers of mass of a low-orbiting satellite and navigation satellites, estimating the total electron content of the ionosphere with subsequent rejection of emissions, and also choosing a reconstruction area. The technique was tested with data obtained from the navigation receiver of the spacecraft from the FormoSat-7/COSMIC-2 meteorological satellite constellation. The results of the total electron content estimation make it possible to apply the algorithm for the continuous solution of the problem of three-dimensional tomography of the ionosphere, which, in turn, allows us to estimate the electron concentration of the ionosphere in the upper ionosphere.
Abstract. The problem of three-dimensional tomography of the upper ionosphere based on the signals of global navigation satellite systems obtained by the navigation receiver of a low-orbit satellite is considered. A method for preliminary processing of data from a satellite navigation receiver is presented, which consists in predicting the coordinates of the centers of mass of a low-orbiting satellite and navigation satellites, estimating the total electron content of the ionosphere with subsequent rejection of emissions, and also choosing a reconstruction area. The technique was tested with data obtained from the navigation receiver of the spacecraft from the FormoSat-7/COSMIC-2 meteorological satellite constellation. The results of the total electron content estimation make it possible to apply the algorithm for the continuous solution of the problem of three-dimensional tomography of the ionosphere, which, in turn, allows us to estimate the electron concentration of the ionosphere in the upper ionosphere.
Keywords: ionosphere, nanosatellite, tomography, pseudo-range, phases measurements, TEC, COSMIC-2, GPS
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