Tropospheric and ionospheric media calibrations based on global navigation satellite system observation dataJoachim Feltens, Gabriele Bellei, Tim Springer, Mark V. Kints, René Zandbergen, Frank Budnik and Erik SchönemannJ. Space Weather Space Clim., 8 (2018) A30DOI: https://doi.org/10.1051/swsc/2018016
