Correlation analysis between ionospheric scintillation levels and receiver tracking performance

Sreeja, V.; Aquino, Márcio; Elmas, Zeynep; Forte, Biagio

doi:10.1029/2012sw000769

Cited by 41 publications

(39 citation statements)

References 13 publications

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“…Previously, GLONASS satellites were not included in the drift velocity estimation study due to the signals' notably higher phase noise as compared to the other GNSS systems (Wang & Morton, ). Similar issues have been observed in other ionospheric scintillation studies (de Oliveira Moraes et al, ; Sreeja et al, ).…”

Section: Methodssupporting

confidence: 87%

New Results on Ionospheric Irregularity Drift Velocity Estimation Using Multi‐GNSS Spaced‐Receiver Array During High‐Latitude Phase Scintillation

2018

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The spaced‐receiver technique using Global Navigation Satellite Systems (GNSS) receivers offers an inexpensive approach for estimating ionospheric irregularity velocity during ionospheric scintillations. Our previous work has demonstrated that correlative studies of the GNSS carrier phase variations can be used to derive irregularity drift velocity at high latitudes. This study expanded upon our previous projects by incorporating Global Navigation Satellite System (GLONASS) signals, investigation on ionospheric irregularity height assumption, and all‐sky imager measurements into the methodology. A case study is presented based on Global Positioning System, Galileo, and GLONASS measurements during a geomagnetic storm event on 20 December 2015, obtained from a closely spaced receiver array at Poker Flat Research Range near Fairbanks, Alaska. The GNSS‐estimated irregularity drift velocities are in general agreement with the measurements from the Poker Flat Incoherent Scatter Radar and the Poker Flat all‐sky imager. The study also shows that the irregularity altitude assumption will not lead to significant variations in the irregularity drift velocity estimates, especially for satellites with relatively high elevations. The techniques presented in this paper demonstrate that GNSS receiver arrays can be used as powerful means to monitor the ionospheric plasma dynamics during space weather events.

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Section: Methodssupporting

confidence: 87%

New Results on Ionospheric Irregularity Drift Velocity Estimation Using Multi‐GNSS Spaced‐Receiver Array During High‐Latitude Phase Scintillation

2018

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“…Scintillation activity in the region is monitored by a network of PolaRxS receivers, that are multi-frequency, multiconstellation receivers, capable to track simultaneously GPS, GLONASS, GALILEO and SBAS frequencies (Sreeja et al 2012). Sampling at 50 Hz, the receivers give, among others, the following main output parameters:…”

Section: Urtkn and Cigala/calibra Networkmentioning

confidence: 99%

L-band scintillations and calibrated total electron content gradients over Brazil during the last solar maximum

Cesaroni

Spogli

Alfonsi

et al. 2015

J. Space Weather Space Clim.

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This work presents a contribution to the understanding of the ionospheric triggering of L-band scintillation in the region over São Paulo state in Brazil, under high solar activity. In particular, a climatological analysis of Global Navigation Satellite Systems (GNSS) data acquired in 2012 is presented to highlight the relationship between intensity and variability of the total electron content (TEC) gradients and the occurrence of ionospheric scintillation. The analysis is based on the GNSS data acquired by a dense distribution of receivers and exploits the integration of a dedicated TEC calibration technique into the Ground Based Scintillation Climatology (GBSC), previously developed at the Istituto Nazionale di Geofisica e Vulcanologia. Such integration enables representing the local ionospheric features through climatological maps of calibrated TEC and TEC gradients and of amplitude scintillation occurrence. The disentanglement of the contribution to the TEC variations due to zonal and meridional gradients conveys insight into the relation between the scintillation occurrence and the morphology of the TEC variability. The importance of the information provided by the TEC gradients variability and the role of the meridional TEC gradients in driving scintillation are critically described.

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“…The most intense scintillation over these latitudes is associated with the crests of the EIA [ Aarons et al , ; Basu et al , ]. Scintillation can impair the GNSS receiver signal tracking performance thereby leading to a degradation in the positioning accuracy [ Aquino et al , ; Krankowski and Shagimuratov , ; Aquino et al , ; Akala et al , ; Sreeja et al, ].…”

Section: Introductionmentioning

confidence: 99%

Performance of ionospheric maps in support of long baseline GNSS kinematic positioning at low latitudes

et al. 2016

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Ionospheric scintillation occurs mainly at high and low latitude regions of the Earth and may impose serious degradation on GNSS (Global Navigation Satellite System) functionality. The Brazilian territory sits on one of the most affected areas of the globe, where the ionosphere behaves very unpredictably, with strong scintillation frequently occurring in the local postsunset hours. The correlation between scintillation occurrence and sharp variations in the ionospheric total electron content (TEC) in Brazil is demonstrated in Spogli et al. (2013). The compounded effect of these associated ionospheric disturbances on long baseline GNSS kinematic positioning is studied in this paper, in particular when ionospheric maps are used to aid the positioning solution. The experiments have been conducted using data from GNSS reference stations in Brazil. The use of a regional TEC map generated under the CALIBRA (Countering GNSS high-Accuracy applications Limitations due to Ionospheric disturbances in BRAzil) project, referred to as CALIBRA TEC map (CTM), was compared to the use of the Global Ionosphere Map (GIM), provided by the International GNSS Service (IGS). Results show that the use of the CTM greatly improves the kinematic positioning solution as compared with that using the GIM, especially under disturbed ionospheric conditions. Additionally, different hypotheses were tested regarding the precision of the TEC values obtained from ionospheric maps, and its effect on the long baseline kinematic solution evaluated. Finally, this study compares two interpolation methods for ionospheric maps, namely, the Inverse Distance Weight and the Natural Neighbor.

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Correlation analysis between ionospheric scintillation levels and receiver tracking performance

Cited by 41 publications

References 13 publications

New Results on Ionospheric Irregularity Drift Velocity Estimation Using Multi‐GNSS Spaced‐Receiver Array During High‐Latitude Phase Scintillation

New Results on Ionospheric Irregularity Drift Velocity Estimation Using Multi‐GNSS Spaced‐Receiver Array During High‐Latitude Phase Scintillation

L-band scintillations and calibrated total electron content gradients over Brazil during the last solar maximum

Performance of ionospheric maps in support of long baseline GNSS kinematic positioning at low latitudes

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