Tackling ionospheric scintillation threat to GNSS in Latin America

Journal of Space Weather and Space Climate

Elcia Ferreira Da Silva⁶  Andrea Cantó⁵  Jean-Marie Sleewaegen³  Andrzej W. Wernik²  Joao Francisco Galera Monico⁸  Bruno Bougard³  Vincenzo Romano⁷  Luca Spogli⁷  Lucilla Alfonsi⁷  Giorgiana De Franceschi⁷  Craig Hancock¹  Zeynep Elmas¹  Biagio Forte⁴  Marcio Aquino¹  Vadakke Veettil Sreeja¹ 

[1] Institute of Engineering Surveying and Space Geodesy, University of Nottingham,Nottingham,NG7 2RD,UK;Space Research Center, Polish Academy of Sciences, ul. Bartycka18a,00-716 Warsaw,Poland;Septentrio N. V., Greenhill Campus,Interleuvenlaan 15G,3001 Leuven,Belgium;Centre for Atmospheric Research, University of Nova Gorica,Vipavska 13,SI 5000 Nova Gorica,Slovenia;Pildo Consulting, SL, Parc Tecnològic de Barcelona Nord Office A216-A220,Marie Curie 8-14,08042 Barcelona,Spain;Consultgel Consultoria em Geomatica Ltda, Rua Jose Tognoli, 238, Presidente Prudente, SP 19060-370,Brazil;Istituto Nazionale di Geofisica e Vulcanologia,Vigna Murata 605,00143 Rome,Italy;Faculdade de Ciências e Tecnologia, Departamento de Cartografia, Universidade Estadual Paulista Julio de Mesquita Filho, Rua Roberto Simonsen, 305, Presidente Prudente, SP,Brazil

关键词: ionospheric irregularities;    equatorial ionosphere;    ionosphere;    modelling and forecasting;   

Others  :  800722
DOI  :  doi:10.1051/swsc/2011005

 received in 2011-02-10, accepted in 2011-10-24,  发布年份 2011

【 摘 要 】

Scintillations are rapid fluctuations in the phase and amplitude of transionospheric radio signals which are caused by small-scale plasma density irregularities in the ionosphere. In the case of the Global Navigation Satellite System (GNSS) receivers, scintillation can cause cycle slips, degrade the positioning accuracy and, when severe enough, can even lead to a complete loss of signal lock. Thus, the required levels of availability, accuracy, integrity and reliability for the GNSS applications may not be met during scintillation occurrence; this poses a major threat to a large number of modern-day GNSS-based applications. The whole of Latin America, Brazil in particular, is located in one of the regions most affected by scintillations. These effects will be exacerbated during solar maxima, the next predicted for 2013. This paper presents initial results from a research work aimed to tackle ionospheric scintillation effects for GNSS users in Latin America. This research is a part of the CIGALA (Concept for Ionospheric Scintillation Mitigation for Professional GNSS in Latin America) project, co-funded by the EC Seventh Framework Program and supervised by the GNSS Supervisory Authority (GSA), which aims to develop and test ionospheric scintillation countermeasures to be implemented in multi-frequency, multi-constellation GNSS receivers.

【 授权许可】

   
© Owned by the authors, Published by EDP Sciences 2011

【 图 表 】

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