EGU General Assembly 2022
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

On the implications of ionospheric disturbances for GNSS precise positioning: a case study of Greenland

Jacek Paziewski1, Yaqi Jin2, Wojciech J. Miloch2, Rafal Sieradzki1, Wojciech Jarmolowski1, Manuel Hernandez-Pajares3, Pawel Wielgosz1, Jens Berdermann4, Mainul Hoque4, Per Høeg2, Alberto Garcıa-Rigo3, Haixia Lyu3,5, Beata Milanowska1, Lasse B. N. Clausen2, Enric Monte-Moreno3, and Raul Orús-Pérez6
Jacek Paziewski et al.
  • 1University of Warmia and Mazury in Olsztyn, Poland
  • 2University of Oslo, Norway
  • 3Universitat Politecnica de Catalunya, Spain
  • 4German Aerospace Center (DLR), Germany
  • 5Wuhan University, China
  • 6ESA/ESTEC, The Netherlands

Ionospheric irregularities impair GNSS signals and, in turn, affect the performance of GNSS positioning. Such effects are especially evident for the high latitudes, which are currently gaining the attention of research and industry branches. These activities should be supported with reliable positioning and navigation services. Such needs motivate us to assess, for the first time, the impact of ionospheric irregularities on GNSS positioning performance in Greenland. We fill the gap and evaluate the performance of positioning methods that were not investigated comprehensively until now but meet the demands of a wide range of users. In this regard, we address the needs of mass-market users that most frequently employ single-frequency receivers and expect a meter to submeter-level accuracy in an absolute mode; and the users who require the highest precision solution based on geodetic-grade dual-frequency receivers. We take advantage of the datasets collected at the GNET permanent network in Greenland during three ionospheric storms, namely the St. Patrick storm of March 17, 2015, June 22, 2015, and August 25–­26, 2018. We discover a significant impact of the ionospheric disturbances on the ambiguity resolution performance and the accuracy of the float solution in RTK positioning. Next, assessing the single-frequency ionospheric-free PPP, we demonstrate that the model is generally unaffected by the ionospheric disturbances. Hence, the model is predestined for the application by the users of single-frequency receivers in the areas of frequent ionospheric disturbances. Finally, based on the observation analyses, we revealed that phase signals on the L2 frequency band are more prone to the cycle slips induced by ionospheric irregularities than those transmitted on the first one.

How to cite: Paziewski, J., Jin, Y., Miloch, W. J., Sieradzki, R., Jarmolowski, W., Hernandez-Pajares, M., Wielgosz, P., Berdermann, J., Hoque, M., Høeg, P., Garcıa-Rigo, A., Lyu, H., Milanowska, B., Clausen, L. B. N., Monte-Moreno, E., and Orús-Pérez, R.: On the implications of ionospheric disturbances for GNSS precise positioning: a case study of Greenland, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-7150,, 2022.