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Analysing Impact of Major Solar Flares on Ionospheric Total Electron Content using NavIC Signals


Affiliations
1 Department of Electronics Engineering, Sardar Vallabhai National Institute of Technology, Surat 395 007, India
2 Department of Applied Physics, Sardar Vallabhai National Institute of Technology, Surat 395 007, India
 

A Navigation with Indian Constellation (NavIC) re-ceiver granted by Space Applications Centre, Ahmed-abad, has been set up at SVNIT, Surat. In the present article, an effort has been made to study ionosphere response with NavIC signals during three consecutive major ‘M’ class and ‘C’ class solar flare events which took place on 22, 23 and 24 July 2016. Empirical mode decomposition (EMD) and variable mode decomposition (VMD) have been used to de-compose total electron content (TEC). Pearson corre-lation coefficients are synthesized and processed for determining the effect of solar flares on TEC data during these events. VMD gives better results com-pared to EMD for determining TEC fluctuations dur-ing the occurrences of solar flare events. Automatic ionospheric scintillation model (RTISM) based on Hilbert–Huang transform is applied to determine au-tomatic threshold using Neyman Pearson detector, probability of detection and probability of false alarm using TEC.

Keywords

Empirical Mode Decomposition, Ionosphe-Ric Scintillation, NavIC, Solar Flares, Total Electron Con-Tent, Variable Mode Decomposition.
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  • Analysing Impact of Major Solar Flares on Ionospheric Total Electron Content using NavIC Signals

Abstract Views: 425  |  PDF Views: 135

Authors

Sonal Parmar
Department of Electronics Engineering, Sardar Vallabhai National Institute of Technology, Surat 395 007, India
Upena Dalal
Department of Electronics Engineering, Sardar Vallabhai National Institute of Technology, Surat 395 007, India
Kamlesh Pathak
Department of Applied Physics, Sardar Vallabhai National Institute of Technology, Surat 395 007, India

Abstract


A Navigation with Indian Constellation (NavIC) re-ceiver granted by Space Applications Centre, Ahmed-abad, has been set up at SVNIT, Surat. In the present article, an effort has been made to study ionosphere response with NavIC signals during three consecutive major ‘M’ class and ‘C’ class solar flare events which took place on 22, 23 and 24 July 2016. Empirical mode decomposition (EMD) and variable mode decomposition (VMD) have been used to de-compose total electron content (TEC). Pearson corre-lation coefficients are synthesized and processed for determining the effect of solar flares on TEC data during these events. VMD gives better results com-pared to EMD for determining TEC fluctuations dur-ing the occurrences of solar flare events. Automatic ionospheric scintillation model (RTISM) based on Hilbert–Huang transform is applied to determine au-tomatic threshold using Neyman Pearson detector, probability of detection and probability of false alarm using TEC.

Keywords


Empirical Mode Decomposition, Ionosphe-Ric Scintillation, NavIC, Solar Flares, Total Electron Con-Tent, Variable Mode Decomposition.

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DOI: https://doi.org/10.18520/cs%2Fv118%2Fi3%2F392-400