@Article{MoraesRodrPerrPaul:2012:AnChLo,
               author = "Moraes, Alison de Oliveira and Rodrigues, Fabiano da Silveira and 
                         Perrella, Waldecir Joao and Paula, Eurico Rodrigues de",
          affiliation = "Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA), S{\~a}o 
                         Jos{\'e} dos Campos, Brazil and Atmospheric \& Space Technology 
                         Research Associates (ASTRA), Boulder, CO, USA and {} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Analysis of the Characteristics of Low-Latitude GPS Amplitude 
                         Scintillation Measured During Solar Maximum Conditions and 
                         Implications for Receiver Performance",
              journal = "Surveys in Geophysics",
                 year = "2012",
               volume = "33",
               number = "5",
                pages = "1107--1131",
                month = "Sept.",
             keywords = "Fading (radio), Ionosphere, Ionospheric measurement, 
                         Scintillation, Alternative approach - Amplitude scintillation - 
                         Comprehensive studies - Cycle slips - Decorrelations - Electron 
                         density irregularities, Equatorial anomaly, Fading duration, 
                         GPS.",
             abstract = "Ionospheric scintillations are fluctuations in the phase and/or 
                         amplitude of trans-ionospheric radio signals caused by electron 
                         density irregularities in the ionosphere. A better understanding 
                         of the scintillation pattern is important to make a better 
                         assessment of GPS receiver performance, for instance. 
                         Additionally, scintillation can be used as a tool for remote 
                         sensing of ionospheric irregularities. Therefore, the study of 
                         ionospheric scintillation has both scientific as well as 
                         technological implications. In the past few years, there has been 
                         a significant advance in the methods for analysis of scintillation 
                         and in our understanding of the impact of scintillation on GPS 
                         receiver performance. In this work, we revisit some of the 
                         existing methods of analysis of scintillation, propose an 
                         alternative approach, and apply these techniques in a 
                         comprehensive study of the characteristics of amplitude 
                         scintillation. This comprehensive study made use of 32 days of 
                         high-rate (50 Hz) measurements made by a GPS-based scintillation 
                         monitor located in Sao JoseŽ dos Campos, Brazil (23.2S, 45.9W, 
                         -17.5 dip latitude) near the Equatorial Anomaly during high solar 
                         flux conditions. The variability of the decorrelation time (s0) of 
                         scintillation patterns is presented as a function of scintillation 
                         severity index (S4). We found that the values of s0 tend to 
                         decrease with the increase of S4, confirming the results of 
                         previous studies. In addition, we found that, at least for the 
                         measurements made during this campaign, averaged values of s0 (for 
                         fixed S4 index values) did not vary much as a function of local 
                         time. Our results also indicate a significant impact of s0 in the 
                         GPS carrier loop performance for S4 C 0.7. An alternative way to 
                         compute the probability of cycle slip that.",
                  doi = "10.1007/s10712-011-9161-z",
                  url = "http://dx.doi.org/10.1007/s10712-011-9161-z",
                 issn = "0169-3298",
             language = "en",
        urlaccessdate = "16 jun. 2024"
}