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
Reads0
Chats0
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
Citations
More filters
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
More filters
Journal ArticleDOI
Polarization fields produced by winds in the equatorial F-region
TL;DR: In this article, the E-layer conductivity may be too small to close this circuit, so that polarization fields build up in the F-layer, causing the plasma to drift with the wind.
Journal ArticleDOI
Electrical coupling of the E- and F-regions and its effect on F-region drifts and winds
TL;DR: In this paper, the effects of the electric field distribution on the geomagnetic field lines linking the E-and F-regions were investigated by solving the electrical and dynamical equations.
Journal ArticleDOI
Electrodynamics in the low and middle latitude ionosphere: a tutorial
TL;DR: In this article, the authors considered the current drivers of the observed ion and electron drifts in the low and middle latitudes of the ionosphere and provided an overall understanding of the governing principles.
Journal ArticleDOI
Annual and semiannual variations in the ionospheric F2-layer: II. Physical discussion
Henry Rishbeth,I. C. F. Müller-Wodarg,I. C. F. Müller-Wodarg,L. Zou,Tim Fuller-Rowell,G. H. Millward,G. H. Millward,G. H. Millward,R.J. Moffett,D. W. Idenden,Alan D. Aylward +10 more
TL;DR: In this article, a coupled thermosphere-ionosphere computational model (CTIP) was proposed to explain the variations in the peak F2-layer electron density (NmF2) at midlatitudes.
Journal ArticleDOI
Low latitude electrodynamic plasma drifts - A review
TL;DR: The characteristics and driving mechanisms of low-latitude ExB plasma drifts and electric fields particularly at F-region heights are reviewed in this paper, where it is concluded that the general characteristics of the quiet-time plasma can be explained as resulting from E- and Fregion dynamo and interhemispheric coupling processes.
Related Papers (5)
Comparison of standard TEC models with a Neural Network based TEC model using multistation GPS TEC around the northern crest of Equatorial Ionization Anomaly in the Indian longitude sector during the low and moderate solar activity levels of the 24th solar cycle
Dibyendu Sur,Ajay Paul +1 more