GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares
Аутори
Nina, AleksandraNico, Giovanni
Odalović, Oleg
Čadež, Vladimir M.
Todorović-Drakul, Miljana
Radovanović, Milan
Popović, Luka Č.
Чланак у часопису (Рецензирана верзија)
Метаподаци
Приказ свих података о документуАпстракт
We investigate the influence of the perturbed (by a solar X-ray flare) ionospheric D-region on the GNSS and SAR signals. We calculate a signal delay in the D-region based on the low ionospheric monitoring by very low frequency (VLF) radio waves. Results show that the ionospheric delay in the perturbed D-region can be important and, therefore, should be taken into account in modeling the ionospheric influence on the GNSS and SAR signal propagation and in calculations relevant for space geodesy. This conclusion is significant because numerous existing models ignore the
impact of this ionospheric part on the GNSS and SAR signals due to its small electron density which is true only in quiet conditions and can result in significant errors in space geodesy during intensive ionospheric disturbances.
Кључне речи:
Ionosphere / Very Low Frequency (VLF) radio signals / Global Navigation Satellite Systems (GNSS) / Synthetic Aperture Radar (SAR) / SAR interferometry (InSAR)Извор:
IEEE Geoscience and Remote Sensing Letters, 2019Издавач:
- IEEE (Institute of Electrical and Electronics Engineers)
Финансирање / пројекти:
- Унапређење геодетске инфраструктуре Србије за потребе савременог Државног премера (RS-36020)
- Астроинформатика: примена ИТ у астрономији и сродним дисциплинама (RS-44002)
- Физика звезда (RS-176004)
- Географија Србије (RS-47007)
- Утицај судара на спектре астрофизичке плазме (RS-176002)
- Астрофизичка спектроскопија вангалактичких објеката (RS-176001)
- OT4CLIMA Project, Italian Ministry of Education, University and Research
- COST Action TD1403
- Cost Action CA15211
- VarSITI Project
DOI: 10.1109/LGRS.2019.2941643
ISSN: 1545-598X