4624 20200127111104.0 CTALK-2020-0053 Cilliers, P. Multi-constellation GNSS observation of ionospheric scintillation at SANAE-IV in Antarctica 2019 2019-08-19 STCE Alfonsi, L. Correia, E. Bergeot, N. Dovis, F. Linty, N. Ward, J. Beacon Satellite Symposium, Olsztyn, Poland jean-marie.chevalier@observatoire.be Contributed CTALKCONT