@Article{MoraesCoAbRoPaOlPe:2017:VaLoIo,
author = "Moraes, Alison de Oliveira and Costa, Emanoel and Abdu,
Mangalathayil Ali and Rodrigues, Fabiano S. and Paula, Eurico
Rodrigues de and Oliveira, Kelias and Perrella, Waldecir
Jo{\~a}o",
affiliation = "{Instituto de Aeron{\'a}utica e Espa{\c{c}}o (IAE)} and
{Pontif{\'{\i}}cia Universidade Cat{\'o}lica do Rio de Janeiro
(PUC-RIO)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}
and {University of Texas at Dallas} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and Instituto Federal de
Educa{\c{c}}{\~a}o, Ci{\^e}ncia e Tecnologia de Goi{\'a}s and
{Instituto Tecnol{\'o}gico da Aeron{\'a}utica (ITA)}",
title = "The variability of low-latitude ionospheric amplitude and phase
scintillation detected by a triple-frequency GPS receiver",
journal = "Radio Science",
year = "2017",
volume = "52",
number = "4",
pages = "439--460",
month = "Apr.",
keywords = "ionospheric scintillation, phase measurements, statistical
modeling.",
abstract = "Ionospheric scintillation is a manifestation of space weather
effects that seriously affect the performance and availability of
space-based navigation and communication systems. This paper
presents results from an investigation on the characteristics of
the phase and amplitude scintillation of Global Positioning System
signals at the L1, L2C, and L5 frequencies. Field data obtained by
a scintillation monitor installed in S{\~a}o Jos{\'e} dos Campos
(23.1°S, 45.8°W; dip latitude 17.3°S, declination 21.4°W), Brazil,
a station located near the southern crest of the equatorial
ionization anomaly, were used for this purpose. The analyzed data
were collected during 150 nights from November 2014 to March 2015,
an epoch of moderate solar activity close to the recent solar
maximum. Only measurements corresponding to an elevation mask of
30° and values above standard threshold levels were used in the
analysis. Outstanding characteristics of amplitude and phase
scintillation are analyzed and compared in this study. The
different characteristics of the scintillation focused in this
study include (1) the statistics of their occurrences at the three
frequencies; (2) the local time distributions of the amplitude and
phase scintillation at different intensity levels; (3)
azimuth-elevation (spatial) distributions at different levels of
the standard deviation of phase fluctuations; (4) scintillation
enhancement and loss of phase lock conditions due to field-aligned
(longitudinal) propagation; (5) the relationship between amplitude
and phase scintillation parameters for the L1, L2C, and L5
frequencies; and (6) the frequency dependence of the amplitude and
phase scintillations. Important results on these different
characteristics are presented and discussed, and some outstanding
problems for future investigations are suggested.",
doi = "10.1002/2016RS006165",
url = "http://dx.doi.org/10.1002/2016RS006165",
issn = "0048-6604",
language = "en",
targetfile = "moraes_variability.pdf",
urlaccessdate = "27 abr. 2024"
}