On correlation between SID monitor and GPS- derived TEC observations during a massive ionospheric storm development (CROSBI ID 674252)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Filić, Mia ; Filjar, Renato
engleski
On correlation between SID monitor and GPS- derived TEC observations during a massive ionospheric storm development
Space weather, geomagnetic and ionospheric conditions are the most prominent single cause of the Global Navigation Satellite System (GNSS) positioning performance degradation, through introduction of the GNSS signal ionospheric delay. This affects numerous GNSS- based technology and socio-economic systems and services. Analyses of case-studies of GNSS positioning performance degradation contribute to characterization of the GNSS positioning error, and support error correction methods and models development. Here a case of rapidly developing ionospheric storm is examined, with the aim of the event characterization using a low-cost Sudden Ionospheric Disturbance (SID) monitor observations of lower ionospheric levels condition through continuous reception of Very Low Frequency (VLF) signal strength values. Time series of observations, taken in Croatia during the St Patrick 2015 event of fast development of the large ionospheric storm, were compared with time series of dual- frequency GPS-derived observations of Total Electronic Content (TEC), a parameter linearly related to GNSS ionospheric delay. A comparison framework has been developed in the open-source R programming framework for statistical computing. Time series of SID and GNSS-based TEC observations were examined for cross- correlation. The research revealed correspondence between two time series. Although not linear, the correspondence identified may be used for an early warning for potential GNSS positioning performance deterioration. Further to this, it may serve as the foundation for understanding of the lower ionosphere contribution to the over-all TEC, and thus to formation of the GNSS ionospheric delay. Our team intends to explore both research directions in forthcoming studies.
correlation ; Sudden Ionospheric Disturbance (SID) monitor ; Total Electron Content (TEC) ; ionospheric storm ; GNSS positioning performance
Best Student Paper Competition Award (URSI Commission G: Ionospheric Radio and Propagation)
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Podaci o prilogu
We-GO6-4
2019.
objavljeno
Podaci o matičnoj publikaciji
Proc of 2019 URSI AP-RASC Conference
Dr Amitava Sen Gupta
Delhi: URSI
Podaci o skupu
2019 Union Radio Scientifique Internationale (URSI) Asia Pacific Radio Science Conference (AP-RASC 2019)
pozvano predavanje
09.03.2019-15.03.2019
New Delhi, Indija