About the correlation between the values of the VTEC ionosphere parameter on GNSS stations of Ukraine

Authors

  • Stepan Savchuk Department of Higher Geodesy and Astronomy of Lviv Polytechnic National University, Lviv, Ukraine
  • Fedir Zablotskyi Department of Higher Geodesy and Astronomy of Lviv Polytechnic National University, Lviv, Ukraine
  • Liubov Yankiv-Vitkovska Department of Higher Geodesy and Astronomy of Lviv Polytechnic National University, Lviv, Ukraine
  • Bohdan Dzhuman Department of Higher Geodesy and Astronomy of Lviv Polytechnic National University, Lviv, Ukraine

DOI:

https://doi.org/10.36023/ujrs.2019.20.143

Keywords:

global navigation satellite systems, ionosphere, total electron content, correlation

Abstract

Obtaining information about the spatial distribution of electronic concentration is a complicated task, since the highrise distribution profiles of the TEC parameter vary both in time and in longitude and latitude, and depend on the magnetic and solar activity. In this regard, it is relevant to study the characteristic quantitative parameters describing the dynamics of ionization of the atmosphere. The purpose of this work is to study the parameter of the ionosphere VTEC, namely the study of correlation links between this parameter at different GNSS stations, the distance between them ranges from 100 to 400 km. To solve this problem, ionfiles were first processed with VTEC parameter values ??at different stations, and their filtration was performed with the help of the Kalman filter. Next, the correlation coefficients between the values ??of the VTEC parameter are found pairwise for all GNSS stations under investigation. The analytical connection between the coefficient of correlation of VTEC parameters and the distance between GNSS stations is proposed. The obtained results allow to simulate variations and dynamics of changes in the concentration of electrons in space.

References

Yankiv-Vitkovska, L. M. (2012). About assigning parameters to the ionosphere for an additional special algorithm: first results. Kosmichna nauka i texnologiya, vol. 18, 6, 73–75. (in Ukrainian). https://doi.org/10.15407/knit2012.06.073

Yankiv-Vitkovska, L. M. (2013). About the distribution of the parameters of the ionosphere for GNSS_station SULP, RVNE and SHAZ. About the calculation of the parameters of the ionosphere for an additional special algorithm: first result. Geodeziya, kartografiya i aerofotoznimannya, 78, 169–172. (in Ukrainian). http://science.lpnu.ua/uk/istcgcap/vsi-vypusky/vypusk-78-2013/pro-doslidzhennya-parametriv-ionosfery-dlya-gnss-stanciy-sulp

Yankiv-Vitkovska, L. M. (2013). Methods of assignment of the parameters of the ionosphere in the case of suputniki stations of Ukraine. Kosmichna nauka i texnologiya, 19, 6, 47–52. (in Ukrainian). https://doi.org/10.15407/knit2013.06.047

Bidaine, B., Warnant, R. (2010). Assessment of the NeQuick model at mid_latitudes using GNSS TEC and ionosonde data. Advances in Space Research. 45(9). P. 1122. https://doi.org/10.1016/j.asr.2009.10.010

Klobuchar, J. (1987). Ionospheric time_delay algorithm for single_frequency GPS users. IEEE Transactions on Aerospace and Electronics System, 23(3), 325–331. https://doi.org/10.1109/taes.1987.310829

Klobuchar, J. A., Kunches, J. M. (2000). Eye on the ionosphere: the spatial variability of ionospheric range delay. GPS Solutions, 3, iss. 3, 70–74. https://doi.org/10.1007/pl00012808

Yankiv-Vitkovska, L. M., Savchuk, S. H., Pauchokm, V. K., Matviichuk, Ya. M. and Bodnar, D. I. M. (2016). Recovery of the Spatial State of the Ionosphere Using Regular Definitions of the TEC Identifier at the Network of Continuously Operating GNSS Stations of Ukraine. Journal of Geodesy and Geomatics Engineering. vol. 1(9). 37–48. https://doi.org/10.17265/2332-8223/2016.01.005

Published

2019-04-21

Issue

Section

Earth observation data applications: Challenges and tasks