TEC derived from local GPS network in Pakistan and comparison with IRI 2016 and IRI PLAS 2017

• Autorzy: Mehmood Maria , Filjar Renato , Saleem Sajid , Shah Munawar , Ahmed Arslan

Identyfikatory

DOI

10.1007/s11600-021-00538-0

• Języki publikacji: EN

Abstrakty

EN

The existing global network of continuously operating stand-alone GNSS reference stations provides an opportunity to estimate total electron content (TEC) from raw Global Positioning System (GPS) measurements. The TEC driven from a local GPS network in Pakistan was compared to two international models: IRI-2016 and IRI-PLAS 2017. The performance was analyzed statistically based on residual analysis, RMSE and correlation. It is observed that the TEC estimated by all three methods follows the same diurnal trend where it maximizes around noon (12 ∶ 00−14 ∶ 00LT) and reduces in the afternoon (15 ∶ 00−17 ∶ 00LT). Both empirical models provide a better estimation of nighttime TEC as compared to daytime TEC and exhibit maximum deviation in the month of April with the lowest deviation in December. The IRI-2016 underestimates TEC by 5 − 10TECU, whereas the IRI-PLAS 2017 overestimates TEC by 10 − 22TECU. However, the IRI-2016 conforms better to GPS-TEC (γ¯ = 0.9710) as compared to IRI-PLAS 2017 (γ¯ = 0.8337). The study shows that local GNSS stations in collaboration with TEC estimated from global models may be used in development of an efcient local TEC model over Pakistan which will not only assist in local ionosphere studies but also aid in improving the positioning accuracy.

Słowa kluczowe

EN

GPS; IRI-2016; TEC; IRI-PLAS 2017

PL

GPS; IRI-2016; TEC; IRI-PLAS 2017

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2021
• Tom: Vol. 69, no. 1
• Strony: 381--389
• Opis fizyczny: Bibliogr. 44 poz.

Twórcy

autor

Mehmood Maria

• National University of Science and Technology (NUST), Islamabad, Pakistan

• https://orcid.org/0000-0001-8421-8442

autor

Filjar Renato

• Zagreb University of Applied Sciences, Croatia and faculty of engineering University of Rijeka, Zagreb, Croatia

autor

Saleem Sajid

• National University of Science and Technology (NUST), Islamabad, Pakistan

autor

Shah Munawar

• Institute of Space Technology, Islamabad, Pakistan

autor

Ahmed Arslan

• Department of Electrical Engineering, Sukkur IBA University, Sukkur, Sindh, Pakistan

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