Ionospheric Rates of Change

Todd Walter, Juan Blanch, Lance DeGroot, Laura Norman, and Mathieu Joerger

Peer Reviewed

Abstract:	Predicting and bounding the ionospheric rates of change that affect Global Navigation Satellite System (GNSS) signals is of interest for filtering and processing GNSS signals. Although dual frequency measurements may be used to directly estimate and remove the effects of ionospheric variation, there are situations where continuous measurements from more than one frequency may be limited. Further, there may be more advantageous ways to combine information from multiple frequencies, particularly when the ionospheric rates are small. This paper presents an analysis of the potential error of this ionospheric rate estimate under both nominal and disturbed ionospheric conditions using historical data, including previously identified extreme ionospheric events.
Published in:	Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018) September 24 - 28, 2018 Hyatt Regency Miami Miami, Florida
Pages:	4158 - 4170
Cite this article:	Walter, Todd, Blanch, Juan, DeGroot, Lance, Norman, Laura, Joerger, Mathieu, "Ionospheric Rates of Change," Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018), Miami, Florida, September 2018, pp. 4158-4170. https://doi.org/10.33012/2018.16112
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