Journal ArticleDOI
Performance evaluation of linear time-series ionospheric Total Electron Content model over low latitude Indian GPS stations
TLDR
In this article, a linear time series model has been carried out on ionospheric TEC at two different locations at Koneru Lakshmaiah University (KLU), Guntur (geographic 16.44°N, 80.62°E; geomagnetic 7.55°N) and Bangalore (geographical 12.97°N and 77.53°N), for the year 2013 in the 24th solar cycle.About:
This article is published in Advances in Space Research.The article was published on 2017-10-15. It has received 13 citations till now. The article focuses on the topics: TEC & International Reference Ionosphere.read more
Citations
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Journal ArticleDOI
Development of multivariate ionospheric TEC forecasting algorithm using linear time series model and ARMA over low-latitude GNSS station
TL;DR: In this article, a multivariate ionospheric TEC forecasting model based on linear time series model in combination with Autoregressive and Moving Average (ARMA) is proposed and implemented using Bengaluru International GNSS Service (IGS) station data (geographic lat. −13.02°N, long. 77.57°E; geomagnetic latitude: 4.4°N) during the period of 8 years (2009-2016) in the 24th solar cycle.
Journal ArticleDOI
Analysis of Ionospheric TEC Variation over Manama, Bahrain, and Comparison with IRI-2012 and IRI-2016 Models
TL;DR: In this paper, the authors investigate the ionospheric total electron content (TEC) variations over Manama, Bahrain, through Global Positioning System (GPS) observations from an International GPS Services (IGS) station (BHR3, 26.21
Journal ArticleDOI
Linear time-series modeling of the GNSS based TEC variations over Southwest Japan during 2011–2018 and comparison against ARMA and GIM models
TL;DR: In this paper, the authors examined spatio-temporal ionospheric TEC variations using long-term Global Navigation Satellite System (GNSS) measurements from 1 January, 2011 to 31 December, 2018 through a modified Linear Time-series Model (LTM) and substantiated their findings by comparing them with those of the existing empirical Global Ionospheric Map (GIM) and Auto-Regressive Moving Average (ARMA) methods.
Journal ArticleDOI
Modeling and analysis of ionospheric TEC variability from GPS-TEC measurements using SSA model during 24th solar cycle
J. R. K. Kumar Dabbakuti,J. R. K. Kumar Dabbakuti,Rangababu Peesapati,Sampad Kumar Panda,Srinivasarao Thummala +4 more
TL;DR: In this article, Singular Spectrum Analysis (SSA) was used to extract information from the noisy time-series data with the first four SSA modes in the decomposition, almost converging to total variance of about 99%.
References
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Book
Geophysical data analysis : discrete inverse theory
TL;DR: In this article, the authors describe a number of different types of inverse problems, such as the least squares problem, the purely underdetermined problem, and the Mixed*b1Determined problem.
Journal ArticleDOI
International Reference Ionosphere 2000
TL;DR: The International Reference Ionosphere (IRI) is the international standard for the specification of ionospheric densities and temperatures as mentioned in this paper, which was developed and is being improved-updated by a joint working group of the International Union of Radio Science (URSI) and the Committee on Space Research (COSPAR).
Journal ArticleDOI
EUVAC: A solar EUV Flux Model for aeronomic calculations
TL;DR: In this article, a new solar Extreme Ultraviolet (EUV) flux model for aeronomic calulations is presented, which is based on the measured F74113 solar EUV reference spectrum.
Journal ArticleDOI
Variability of the ionosphere
TL;DR: In this paper, the average 1-σ variability of Nmax about the mean ranges from approx. ±35% (equator) to approximately ±45% (anomaly peak) for high frequencies, and from approximately ±25% to approximately.
Journal ArticleDOI
Fast and ultrafast Kelvin wave modulations of the equatorial evening F region vertical drift and spread F development
M. A. Abdu,Christiano M. G. Brum,Paulo Batista,Subramanian Gurubaran,Dora Pancheva,José Valentin Bageston,Inez S. Batista,Hisao Takahashi +7 more
TL;DR: In this paper, the role of eastward and upward propagating fast (FK) and ultrafast Kelvin (UFK) waves in the day-to-day variability of equatorial evening prereversal vertical drift and post sunset generation of spread F/plasma bubble irregularities was investigated.
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