Journal ArticleDOI
Response of data-driven artificial neural network-based TEC models to neutral wind for different locations, seasons, and solar activity levels from the Indian longitude sector
TLDR
In this article, a set of observations carried out in the Indian longitude sector have been reported in order to find the amount of improvement in performance accuracy of an ANN-based Vertical Total Electron Content (VTEC) model after incorporation of neutral wind as model input.Abstract:
The perturbations imposed on transionospheric signals by the ionosphere are a major concern for navigation. The dynamic nature of the ionosphere in the low latitude equatorial region and the Indian longitude sector has some specific characteristics such as sharp temporal and latitudinal variation of Total Electron Content (TEC). TEC in the Indian longitude sector also undergoes seasonal variations. The large magnitude and sharp variation of TEC causes large and variable range errors for satellite based navigation system such as Global Positioning System (GPS) throughout the day. For accurate navigation using Satellite Based Augmentation Systems (SBAS), proper prediction of TEC under certain geophysical conditions is necessary in the equatorial region. It has been reported in the literature that prediction accuracy of TEC has been improved using measured data driven Artificial Neural Network (ANN) based VTEC models, compared to standard ionospheric models. A set of observations carried out in the Indian longitude sector have been reported in this paper in order to find the amount of improvement in performance accuracy of an ANN-based Vertical TEC (VTEC) model after incorporation of neutral wind as model input. The variations of this improvement in prediction accuracy with respect to latitude, longitude, season and solar activity have also been reported in this paper.read more
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Peer Review
Aeronomy Perspectives on Integrated , Coordinated , Open , Networked ( ICON )
TL;DR: In this article , a commentary about the state of Integrated, Coordinated, Open, and Networked (ICON) principles in Space Physics and Aeronomy and a discussion on several scopes and limitations to implementing them are discussed.
References
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Journal ArticleDOI
The multi‐instrumented studies of equatorial thermosphere aeronomy scintillation system: Climatology of zonal drifts
TL;DR: In this paper, the first year's drift and scintillation statistics have been presented as a function of local time, season and magnetic activity and compared with the statistics of ion drift published earlier from incoherent scatter radar observations.
Journal ArticleDOI
On the equatorial anomaly of the ionospheric total electron content near the northern anomaly crest region
TL;DR: In this article, the authors studied the behavior of the development of the equatorial anomaly around the northern anomaly crest region and found no significant correlation between the anomaly crest and the magnetic index.
Journal ArticleDOI
The electron content of the southern mid-latitude ionosphere, 1965-1971.
TL;DR: The average diurnal, seasonal and solar cycle changes in the ionosphere from June 1965 to August 1971 were studied in this article, showing that the mean amplitude of the day-to-day fluctuations in electron content shows no appreciable solar cycle change.
Journal ArticleDOI
Equinoctial asymmetries in the ionosphere and thermosphere observed by the MU radar
TL;DR: In this article, the authors studied the equinoctial asymmetries in the ionosphere and the thermosphere during the solar maximum period 1988-1992 and found that the well-known seasonal anomaly in the electron density Ne exists only during daytime and at altitudes near the ionospheric peak and below.
Journal ArticleDOI
Ionospheric effects at low latitudes during the March 22, 1979, geomagnetic storm
TL;DR: In this paper, a numerical model of the equatorial ionosphere is used to calculate the maximum electron densities and F layer heights associated with a storm-perturbed neutral atmosphere and circulation model.
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