Ionospheric Behavior during the 10 June 2021 Annular Solar Eclipse and Its Impact on GNSS Precise Point Positioning

The main effects of the 10 June 2021 annular solar eclipse on GNSS position estimation accuracy are presented. The analysis is based on TEC measurements made by 2337 GNSS stations around the world. TEC perturbations were obtained by comparing results 2 days prior to and after the day of the event. F...

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Veröffentlicht in:	Remote sensing (Basel, Switzerland) Switzerland), 2022-07, Vol.14 (13), p.3119
Hauptverfasser:	Valdés-Abreu, Juan Carlos, Díaz, Marcos A., Bravo, Manuel, Báez, Juan Carlos, Stable-Sánchez, Yohadne
Format:	Artikel
Sprache:	eng
Schlagworte:	Ambiguity resolution (mathematics) Depletion Equatorial regions Global navigation satellite system Global positioning systems GNSS GPS Gravity waves Ionization Ionosphere Kriging interpolation Perturbation Position measurement precise point positioning rate of total electron content index solar eclipse Solar eclipses Sun total electron content
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Zusammenfassung:	The main effects of the 10 June 2021 annular solar eclipse on GNSS position estimation accuracy are presented. The analysis is based on TEC measurements made by 2337 GNSS stations around the world. TEC perturbations were obtained by comparing results 2 days prior to and after the day of the event. For the analysis, global TEC maps were created using ordinary Kriging interpolation. From TEC changes, the apparent position variation was obtained using the post-processing kinematic precise point positioning with ambiguity resolution (PPP-AR) mode. We validated the TEC measurements by contrasting them with data from the Swarm-A satellite and four digiosondes in Central/South America. The TEC maps show a noticeable TEC depletion (
ISSN:	2072-4292 2072-4292
DOI:	10.3390/rs14133119