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15 December 2021 Ionospheric slant total electron content determination from multi-frequency GNSS signals carrier-phase measurements
Vladimir B. Pudlovskiy
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Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 119168C (2021) https://doi.org/10.1117/12.2603477
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation
Abstract
Receiving and processing of global navigation satellite systems (GNSS) signals make it possible to determine the ionospheric total electronic content (TEC). Most of the TEC estimation methods used are based on processing joint measurements by code and carrier phase in two bands of signals from a navigation satellite. With such an estimate of the TEC, systematic errors arise associated with different signal delays in different frequency bands in the radio frequency path of the satellite transmitter and the navigation receiver, called differential code biases (DCB). To exclude the effect of DCB on the error in determining the slant TEC (STEC), a method for processing only simultaneous carrier-phase measurements in different frequency bands based on signals from two or three satellites is proposed. To resolve the ambiguity of carrier-phase measurements, these satellites should have a close angular position relative to the receiver.
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Vladimir B. Pudlovskiy "Ionospheric slant total electron content determination from multi-frequency GNSS signals carrier-phase measurements", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 119168C (15 December 2021); https://doi.org/10.1117/12.2603477
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KEYWORDS
Receivers
Ions
Signal processing
Medium wave
Global Positioning System
Error analysis
Navigation systems
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