Effect of Anisotropy of Ionospheric Inhomogeneities in the Detection of Faults in Phase GNSS Measurements

Bezler, I. V.; Ishin, A. B.; Konetskaya, E. V.; Tinin, M. V.

doi:10.1134/s0016793219030046

Cited by 3 publications

(1 citation statement)

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“…For example the level of amplitude scintillation increases as the axial ratio of characteristic ellipsoid of ionospheric irregularities increases (Kumagai & Ogawa, 1986;Gola et al, 1992;Anderson & Straus, 2005;Jandieri et al, 2017). Similarly, the phase scintillation is enhanced if the ray trajectory of the signal orients most closely to the geomagnetic field line (Prikryl et al, 2011;Afraimovich et al, 2011;Bezler et al, 2019;Hong et al, 2020;Yang et al, 2020). These geometric enhancement effects of ionospheric scintillations could be also masked or contaminated by other effects such as due to the multipath contributions received at small elevation angles (Atilaw et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Anisotropic scintillation indices for weak scattering regime

Vasylyev

Béniguel

Wilken

et al. 2022

Preprint

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Transionospheric radio signals might undergo random modulations of their amplitude and phase caused by scattering on irregular structures in the ionosphere. This phenomenon, known as scintillation, is governed by the space weather conditions, time of the day, season, local distribution of the geomagnetic field, etc. All these factors make ionospheric scintillation both highly variable in space and time. Moreover, scintillation are intrinsically anisotropic since the associated scattering irregularities tend to align and stretch along the geomagnetic field lines. Depending on the relative position of signal source, the receiving station, and the irregularity, the scintillation effect on the transmitted wave might be enhanced or reduced. This study is focused on the consistent accounting of this geometric effect in scintillation modeling with the emphasis on situations when the communication or sensing sender-receiver link is nearly horizontal. For this task the single phase screen model has been used to model the scattering of propagating radio signals on random ionospheric layer. The geometric enhancement effect of scintillation is demonstrated by considering communication links via a geostationary beacon satellite over the equator.

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