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30 November 2017 Possibility of correcting ionospheric model, using data from single-frequency receivers of global navigation satellite systems
Victor I. Sazhin, Vladimir E. Unuchkov
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Proceedings Volume 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 104667C (2017) https://doi.org/10.1117/12.2284635
Event: XXIII International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2017, Irkutsk, Russian Federation
Abstract
This report describes a method for estimating ionospheric signal delay for pseudorange GNSS measurements made with a single-frequency receiver. To reduce the influence of the instability of the time scale of the receiver, we determine the difference between magnitudes of ionospheric delay of signals from two satellites at one time. To eliminate random fluctuations from the difference, we average data over a period from 30 to 60 minutes. Numerical simulation is carried out to determine the influence of a change in the critical frequency and height of the ionospheric maximum on pseudorange. It is shown that under favorable conditions variations in the ionospheric delay difference can be used to correct the ionospheric model that reflects hourly variations in its parameters. We study a method for determining current values of critical frequencies of the ionosphere for a regional correction of its model.
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Victor I. Sazhin and Vladimir E. Unuchkov "Possibility of correcting ionospheric model, using data from single-frequency receivers of global navigation satellite systems", Proc. SPIE 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 104667C (30 November 2017); https://doi.org/10.1117/12.2284635
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KEYWORDS
Data modeling
Receivers
Satellite navigation systems
Systems modeling
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