GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares

Nina, Aleksandra; Nico, Giovanni; Odalović, Oleg; Čadež, Vladimir M.; Todorović-Drakul, Miljana; Radovanović, Milan; Popović, Luka Č.

doi:10.1109/LGRS.2019.2941643

2019

LGRS2941643_2.pdf (1.144Mb)

Authors

Nina, Aleksandra
Nico, Giovanni
Odalović, Oleg

Čadež, Vladimir M.
Todorović-Drakul, Miljana

Radovanović, Milan
Popović, Luka Č.

Article (Accepted Version)

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Abstract

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.

Keywords:

Ionosphere / Very Low Frequency (VLF) radio signals / Global Navigation Satellite Systems (GNSS) / Synthetic Aperture Radar (SAR) / SAR interferometry (InSAR)

Source:
IEEE Geoscience and Remote Sensing Letters, 2019

Publisher:

IEEE (Institute of Electrical and Electronics Engineers)

Projects:

Serbian geodetic infrastructure advancement for the needs of a modern state survey (RS-36020)
Astroinformatics: application of IT in astronomy and close fields (RS-44002)
Stellar physics (RS-176004)
Geography of Serbia (RS-47007)
Influence of collisions on astrophysical plasma spectra (RS-176002)
Astrophysical Spectroscopy of Extragalactic Objects (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

WoS: 000543724300019

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URI

http://grafar.grf.bg.ac.rs/handle/123456789/1760

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Institution

GraFar

TY  - JOUR
AU  - Nina, Aleksandra
AU  - Nico, Giovanni
AU  - Odalović, Oleg
AU  - Čadež, Vladimir M.
AU  - Todorović-Drakul, Miljana
AU  - Radovanović, Milan
AU  - Popović, Luka Č.
PY  - 2019
UR  - http://grafar.grf.bg.ac.rs/handle/123456789/1760
AB  - 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.
PB  - IEEE (Institute of Electrical and Electronics Engineers)
T2  - IEEE Geoscience and Remote Sensing Letters
T1  - GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares
DO  - 10.1109/LGRS.2019.2941643
ER  -

@article{
author = "Nina, Aleksandra and Nico, Giovanni and Odalović, Oleg and Čadež, Vladimir M. and Todorović-Drakul, Miljana and Radovanović, Milan and Popović, Luka Č.",
year = "2019",
url = "http://grafar.grf.bg.ac.rs/handle/123456789/1760",
abstract = "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.",
publisher = "IEEE (Institute of Electrical and Electronics Engineers)",
journal = "IEEE Geoscience and Remote Sensing Letters",
title = "GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares",
doi = "10.1109/LGRS.2019.2941643"
}

Nina A, Nico G, Odalović O, Čadež VM, Todorović-Drakul M, Radovanović M, Popović LČ. GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares. IEEE Geoscience and Remote Sensing Letters. 2019;

Nina, A., Nico, G., Odalović, O., Čadež, V. M., Todorović-Drakul, M., Radovanović, M.,& Popović, L. Č. (2019). GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares.
IEEE Geoscience and Remote Sensing LettersIEEE (Institute of Electrical and Electronics Engineers)..
https://doi.org/10.1109/LGRS.2019.2941643

Nina Aleksandra, Nico Giovanni, Odalović Oleg, Čadež Vladimir M., Todorović-Drakul Miljana, Radovanović Milan, Popović Luka Č., "GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares" (2019),
https://doi.org/10.1109/LGRS.2019.2941643 .