Ionospheric scintillation threats to GNSS in polar regions: The DemoGRAPE case study in Antarctica

Linty, Nicola; Romero, Rodrigo; Cristodaro, Calogero; Dovis, Fabio; Bavaro, Michele; Curran, James T.; Fortuny-Guasch, J.; Ward, J.; Lamprecht, Gert; Cilliers, Pierre J.; Correia, E.; Alfonsi, Lucilla

doi:10.1109/euronav.2016.7530546

Cited by 11 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first consideration is on the good match between the estimates from the two instruments. This has already been proved in previous works on the topic [2,3]. A second consideration is on the potentialities offered by the SDRbased post processing.…”

Section: Resultsmentioning

confidence: 67%

“…Raw IF data can then be post-processed by means of a fully software SDR-based GNSS receiver. In order to limit the volume of IF data generated by the RFE, the data collection is triggered by scintillation events exceeding predefined thresholds [2]. Figure 2 shows the concept and system architecture of a SDR-based receiver, compared to a traditional hardware GNSS receiver [3].…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of the ionospheric scintillations during 20–21 January 2016 from SANAE by means of the DemoGRAPE scintillation receivers

Cilliers

Alfonsi

Spogli

et al. 2017

2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)

View full text Add to dashboard Cite

Analysis of the ionospheric scintillations during 20-21 January 2016 from SANAE by means of the DemoGRAPE scintillation receivers / Cilliers, P. J.; Alfonsi, L.; Spogli, L.; De Franceschi, G.; Romano, V.; Hunstad, I.; Linty, N.; Terzo, O.; Dovis, F.; Ward, J.; Cesaroni, C.; Stephenson, J. AbstractThis paper presents ionospheric scintillation data recorded at SANAE in Antarctica during a moderate geomagnetic storm on 20-21 January 2016 which gives evidence of the advantages of the new generation of instrumentation for monitoring ionospheric scintillation. The data was collected as part of the DemoGRAPE project aimed at the demonstration of cutting edge technology for the empirical assessment of the ionospheric delay and ionospheric scintillations in the polar regions which affect the accuracy of satellite navigation.

show abstract

Section: Resultsmentioning

confidence: 67%

Section: Methodsmentioning

confidence: 99%

Analysis of the ionospheric scintillations during 20–21 January 2016 from SANAE by means of the DemoGRAPE scintillation receivers

Cilliers

Alfonsi

Spogli

et al. 2017

2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)

View full text Add to dashboard Cite

show abstract

“…Figure shows the detection of phase scintillation on the ray path from Galileo satellite 11, as detected by the Septentrio ISMR and the SDR‐bases system at SANAE on 20 January 2016. Similar results, for different constellations (GPS) and for other ionospheric events, were also analyzed [ Linty et al ., ]. The figure illustrates the capability of the system to detect ionospheric scintillation and reveals the excellent correspondence between the data from the SDR‐based and the Septentrio receiver, thus validating the SDR approach to monitor the scintillations.…”

Section: The Demogrape Contributionmentioning

confidence: 64%

First Observations of GNSS Ionospheric Scintillations From DemoGRAPE Project

et al. 2016

View full text Add to dashboard Cite

The Istituto Nazionale di Geofisica e Vulcanologia leads an international project funded by the Italian National Program for Antarctic Research, called Demonstrator of Global Navigation Satellite System (GNSS) Research and Application for Polar Environment (DemoGRAPE), in partnership with Politecnico di Torino, Istituto Superiore Mario Boella, and with South African National Space Agency and the Brazilian National Institute of Space Physics, as key collaborators. DemoGRAPE is a new prototype of support for the satellite navigation in Antarctica. Besides the scientific interest, the accuracy of satellite navigation in Antarctica is of paramount importance since there is always the danger that people and vehicles can fall into a crevasse during a snowstorm, when visibility is limited and travel is restricted to following specified routes using satellite navigation systems. The variability of ionospheric delay and ionospheric scintillation are two of the primary factors which affect the accuracy of satellite navigation. The project will provide a demonstrator of cutting edge technology for the empirical assessment of the ionospheric delay and ionospheric scintillations in the polar regions. The scope of the project includes new equipment for the recording and dissemination of GNSS data and products installed at the South African and Brazilian bases in Antarctica. The new equipment will facilitate the exchange of software and derived products via the Cloud computing technology infrastructure. The project portal is accessible at http://www.demogrape.net. We report the first Global Navigation Satellite System (GNSS) signal scintillations observed in Antarctica.

show abstract

“…SDR‐based receivers are valuable alternative to ISMRs, as proven by Curran et al () and Peng and Morton (). Furthermore, it has been proven by Linty et al () that they provide scintillation indexes with the same quality of a professional commercial ISMR. As an example, this paper shows results of carrier smoothing positioning algorithm, which can be implemented and easily configured when using software GNSS receivers.…”

Section: Measurement Campaign Setup and Installationmentioning

confidence: 97%

Effects of Phase Scintillation on the GNSS Positioning Error During the September 2017 Storm at Svalbard

et al. 2018

Self Cite

View full text Add to dashboard Cite

In early September 2017, several space weather events triggered disturbed conditions of the near‐Earth space. The combination of two coronal mass ejection arrivals, associated with an X‐class flare, caused a strong geomagnetic storm on 7 and 8 September, thus inducing diffuse ionospheric phase scintillations on Global Navigation Satellite System (GNSS) signals. This work analyzes the effects and the actual impact of such phase scintillations on transionospheric Global Positioning System (GPS) signals and on related positioning accuracy. The research focuses in particular on high‐latitude GPS L1 data, recorded during a test campaign in Svalbard, Norway. The joint effect of satellites at low elevation and the exposure of ionosphere to the geospace forcing make navigation a critical task for such a challenging environment. Data analysis shows that the performance of carrier smoothing algorithms was affected by the presence of moderate and strong phase scintillation. It is shown in this study that positioning errors double when GPS signals affected by scintillation are used. This work shows that scintillations induce a considerable clustering effect on the smoothed positioning solutions; therefore, a methodology to automatically and autonomously detect the boundaries of the scintillation event is suggested according to such an high‐level effect. The use of software‐defined radio receivers for automatically capturing and processing GNSS data affected by scintillation is an added value to the analysis, as it offers the possibility to implement advanced signal processing techniques and a deeper observation of the impact of scintillations on the signals.

show abstract

Ionospheric scintillation threats to GNSS in polar regions: The DemoGRAPE case study in Antarctica

Cited by 11 publications

References 8 publications

Analysis of the ionospheric scintillations during 20–21 January 2016 from SANAE by means of the DemoGRAPE scintillation receivers

Analysis of the ionospheric scintillations during 20–21 January 2016 from SANAE by means of the DemoGRAPE scintillation receivers

First Observations of GNSS Ionospheric Scintillations From DemoGRAPE Project

Effects of Phase Scintillation on the GNSS Positioning Error During the September 2017 Storm at Svalbard

Contact Info

Product

Resources

About