@Article{MoraesMuPaOlTePeMe:2018:StEvGL,
author = "Moraes, Alison de Oliveira and Muella, Marcio T. A. H. and Paula,
Eurico Rodrigues de and Oliveira, C{\'e}sar B. A. de and Terra,
William P. and Perrella, Waldecir J. and Meibach-Rosa, P{\^a}mela
R. P.",
affiliation = "{Instituto de Aeron{\'a}utica e Espa{\c{c}}o (IAE)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and EMBRAER and
{Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)}",
title = "Statistical evaluation of GLONASS amplitude scintillation over low
latitudes in the Brazilian territory",
journal = "Advances in Space Research",
year = "2018",
volume = "61",
number = "7",
pages = "1776--1789",
month = "Apr.",
keywords = "Ionospheric scintillation, GNSS availability.",
abstract = "The ionospheric scintillation, generated by the ionospheric plasma
irregularities, affects the radio signals that pass through it.
Their effects are widely studied in the literature with two
different approaches. The first one deals with the use of radio
signals to study and understand the morphology of this phenomenon,
while the second one seeks to understand and model how much this
phenomenon interferes in the radio signals and consequently in the
services to which these systems work. The interest of several
areas, particularly to those that are life critical, has increased
using the concept of satellite multi-constellation, which consists
of receiving, processing and using data from different navigation
and positioning systems. Although there is a vast literature
analyzing the effects of ionospheric scintillation on satellite
navigation systems, the number of studies using signals received
from the Russian satellite positioning system (named GLONASS) is
still very rare. This work presents for the first time in the
Brazilian low-latitude sector a statistical analysis of
ionospheric scintillation data for all levels of magnetic
activities obtained by a set of scintillation monitors that
receive signals from the GLONASS system. In this study, data
collected from four stations were used in the analysis; Fortaleza,
Presidente Prudente, Sao JoseŽ dos Campos and Porto Alegre. The
GLONASS L-band signals were analyzed for the period from December
21, 2012 to June 20, 2016, which includes the peak of the solar
cycle 24 that occurred in 2014. The main characteristics of
scintillation presented in this study include: (1) the statistical
evaluation of seasonal and solar activity, showing the chances
that an user on similar geophysical conditions may be susceptible
to the effects of ionospheric scintillation; (2) a temporal
analysis based on the local time distribution of scintillation at
different seasons and intensity levels; and (3) the evaluation of
number of simultaneously affected channels and its effects on the
dilution of precision (DOP) for GNSS users are also presented in
order to alert the timetables in which navigation will be most
susceptible to such effects, as well as statistics on
simultaneously affected channels. Relevant results about these
statistical characteristics of scintillation are presented and
analyzed providing relevant information about availability of a
navigation system.",
doi = "10.1016/j.asr.2017.09.032",
url = "http://dx.doi.org/10.1016/j.asr.2017.09.032",
issn = "0273-1177 and 1879-1948",
language = "en",
targetfile = "Moraes_statistical.pdf",
urlaccessdate = "27 abr. 2024"
}