INVESTIGADORES
AZPILICUETA Francisco Javier
congresos y reuniones científicas
Título:
Ionospheric Delay Forecast Using GNSS Data
Autor/es:
CUETO M.; SARDÓN E.; CESON MORO A.; AZPILICUETA FRANCISCO; BRUNINI CLAUDIO
Reunión:
Simposio; 24th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2011); 2011
Resumen:
The ionosphere affects signals broadcast by Global
Navigation Satellite Systems (GNSS) by delaying the
propagation of the code carried by the signal. In general
ionospheric effects in mid-latitude regions are not severe,
causing only gradual variations in ionospheric delays
(except in the presence of magnetic storms) whose
magnitude can be roughly predicted. However in the
equatorial region ionospheric effects are more severe:
added to the higher ionospheric delays in this area, the
presence of the equatorial anomaly and other equatorial
features complicate the ionospheric modeling and make
more difficult the prediction of its main features and its
effects on GNSS and other applications that depends on
the ionospheric status.
Nowadays ionospheric algorithms are mainly focused on
post-processing and now cast estimation.
However, an ionospheric predicting tool could be
very useful for several applications, above all for
unstable conditions and for the equatorial region:
an algorithm capable of predicting the
ionospheric behavior in advance could be used to
set up early warnings for different uses, among
others civil aviation based on Ground Based
Augmentation Systems (GBAS) or Satellite
Based Augmentation System (SBAS), the
protection of valuable communication satellites
from space weather adverse conditions, as well
as other technologies affected by space weather,
including geophysical exploration and protection
of long distance pipelines, HF radio systems,
communication and surveillance systems,
spacecraft operations, defense needs and alarm
systems for safety applications.