@Article{MariniPereiraOlSaMoPaMuPe:2019:FiVaAl,
author = "Marini Pereira, Leonardo and Oliveira, Kelias de and Salles, Lucas
A. and Moraes, Alison de O. and Paula, Eurico Rodrigues de and
Muella, Marcio Tadeu de Assis Honorato and Perrella, Waldecir J.",
affiliation = "{Institute of Airspace Control (ICEA)} and {Instituto Federal de
Goi{\'a}s (IFG)} 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 do Vale do Para{\'{\i}}ba
(UNIVAP)} and {Instituto Tecnol{\'o}gico de Aeron{\'a}utica
(ITA)}",
title = "On the field validation of a-l fading coefficients estimator based
on the autocorrelation function for ionospheric amplitude
scintillation",
journal = "Advances in Space Research",
year = "2019",
volume = "64",
number = "10",
pages = "2176--2187",
month = "Nov.",
keywords = "Ionospheric scintillation, Fading distribution, GNSS availability,
Augmentation systems.",
abstract = "The ionosphere in low-latitude regions has intense dynamics with
great variability - not only spatially but also temporally. The
most critical effect found in the low-latitude region is the
scintillation in phase and amplitude due to plasma bubble
occurrence in the ionospheric layer. To augmentation systems like
GBAS or SBAS, designed to provide Category-I (CAT I) precision
approach service in low-visibility conditions, plasma bubbles can
compromise the performance requirements for air navigation
precision approach in a way that the service provided by the
system is considered unviable. In practical terms, this is the
main reason why the Brazilian Department of Airspace Control
(DECEA) still has not implemented any augmentation system in
Brazil. Scintillation may lead to loss of signal lock of the
affected satellite. In this context, a better understanding of the
scintillation pattern and its statistical properties gain
particular relevance, once this is the most concerning issue for
the performance of any GNSS receiver in low-latitude regions
especially in the context of augmentation systems for air
navigation. Previous works validated the use of the alpha-mu
distribution to characterize amplitude scintillation. The present
work is concerned with proposing a new method for the estimation
of the alpha-mu coefficients based on the alpha-mu,
autocorrelation function. The method is validated using field data
and comparing the results from empirical autocorrelation function
with the results obtained from the moment-based estimator.
Additionally, the efficiency of the method is proven by analyzing
measurements of Level-Crossing Rate (LCR) and Average Fading
Duration (AFD) with their respective theoretical formulation. (.",
doi = "10.1016/j.asr.2019.06.012",
url = "http://dx.doi.org/10.1016/j.asr.2019.06.012",
issn = "0273-1177 and 1879-1948",
language = "en",
targetfile = "marini_field.pdf",
urlaccessdate = "28 abr. 2024"
}