@Article{MoraesSoAfSiPaMo:2023:StEvRo,
               author = "Moraes, Alison and Sousasantos, Jonas and Affonso, Bruno J. and 
                         Silva, Paulo R. P. and Paula, Eurico Rodrigues de and Monico, 
                         Jo{\~a}o F. G.",
          affiliation = "{Instituto de Aeron{\'a}utica e Espa{\c{c}}o (IAE)} and 
                         {University of Texas at Dallas} and {Instituto Tecnol{\'o}gico de 
                         Aeron{\'a}utica (ITA)} and {Instituto Tecnol{\'o}gico de 
                         Aeron{\'a}utica (ITA)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidade Estadual Paulista (UNESP)}",
                title = "Statistical Evaluation of the Role of GNSS Signal Propagation 
                         Orientation in Low-Latitude Amplitude Scintillation Severity",
              journal = "IEEE Open Journal of Antennas and Propagation",
                 year = "2023",
               volume = "4",
                pages = "602--613",
             keywords = "Alpha-mu distribution, equatorial plasma bubbles, fading 
                         coefficients, GNSS propagation orientation.",
             abstract = "Equatorial plasma bubbles are depleted plasma structures aligned 
                         to the geomagnetic field lines that are generated in the nighttime 
                         ionosphere bottomside and rise to the topside extending to 
                         increasingly higher latitudes. These structures induce 
                         fluctuations in the transionospheric radio signals causing the 
                         phenomenon known as ionospheric scintillation. Ionospheric 
                         scintillation is one of the main concerns for safety critical 
                         applications that rely on Global Navigation Satellite System 
                         information, therefore, the understanding about the occurrence and 
                         severity of scintillation is necessary. In this work, an analysis 
                         considering aspects of the orientation of the propagation of the 
                         radio signals through the plasma bubbles structures is performed 
                         to evaluate how this geometry can affect the scintillation 
                         profile. The dataset covers five months of records from three 
                         stations over the Brazilian region during the last solar cycle 
                         maximum. The initial results indicate that propagation paths fully 
                         aligned are consistently related to larger values of S-4 and more 
                         severe scintillation. The statistical evaluations with the 
                         alpha-mu model show that during such cases stronger fading events 
                         are expected. According to the field measurements, fading events 
                         deeper than -15 dB are 73% more likely to occur under some aligned 
                         environments when compared to other propagation paths.",
                  doi = "10.1109/OJAP.2023.3290981",
                  url = "http://dx.doi.org/10.1109/OJAP.2023.3290981",
                 issn = "2637-6431",
             language = "en",
           targetfile = "
                         
                         Statistical_Evaluation_of_the_Role_of_GNSS_Signal_Propagation_Orientation_in_Low-Latitude_Amplitude_Scintillation_Severity.pdf",
        urlaccessdate = "04 maio 2024"
}