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Validation of the IRI-2016 model with Indian NavIC data for future navigation applications

Journal Article · · IET Radar, Sonar & Navigation
DOI:https://doi.org/10.1049/rsn2.12013· OSTI ID:1852183
 [1];  [2];  [2];  [2]
  1. Osmania Univ, Hyderabad (India); Osmania Univ., Hyderabad (India)
  2. Osmania Univ, Hyderabad (India)
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The position accuracy of Navigation with Indian Constellation (NavIC) system is affected by several sources of errors. Among them, the Ionospheric Time Delay (ITD) error is the most predominant one which depends upon the total electron content (TEC) present in the ionosphere. The ITD variations are more intense over low latitude regions due to the equatorial anomaly effects. Hence, modelling of ITD error is necessary. The International Reference Ionosphere (IRI)-2016 model is one of the standard global ionospheric models to estimate the Vertical TEC (VTEC). This paper discusses about the VTEC deviations due to the IRI-2016 model over low latitude Hyderabad station, Indian region using NavIC, Global Positioning System and Global Navigation Satellite System signals at corresponding Ionospheric Pierce Point latitude and longitudes for all months and various Kp indices during the low solar activity year 2017. In this work, cross correlation coefficient, the metric norm (L2N), Symmetric Kullbacke Leibler Distance metrics are used to evaluate the performance of IRI-2016 model TEC with NavIC, GPS and GLONASS data. From the results, it is found that TEC predicted by the IRI-2016 model produced smaller estimation errors with NavIC data over Indian region. The obtained results will be helpful for future updates of IRI model.
Research Organization:
University Corporation for Atmospheric Research, Boulder, CO (United States)
Sponsoring Organization:
National Aeronautics and Space Administration (NASA); National Oceanic and Atmospheric Administration (NOAA); National Science Foundation (NSF); Natural Environment Research Council (NERC); USDOE Office of Science (SC)
Grant/Contract Number:
SC0016332
OSTI ID:
1852183
Journal Information:
IET Radar, Sonar & Navigation, Journal Name: IET Radar, Sonar & Navigation Journal Issue: 1 Vol. 15; ISSN 1751-8784
Publisher:
Institution of Engineering and Technology - WileyCopyright Statement
Country of Publication:
United States
Language:
English

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