Journal of Aeronautics & Aerospace Engineering
Open Access

GNSS carrier phase noise as a promising means to reconstruct fine structure of the ionosphere

4^th International Conference and Exhibition on Satellite & Space Missions

June 18-20, 2018 | Rome, Italy

Vladislav V Demyanov and Yuri V Yasyukevich

Irkutsk State Transport University, Russia
Institute of Solar and Terrestrial Physics, Russia

Scientific Tracks Abstracts: J Aeronaut Aerospace Eng

Abstract :

Ionospheric activities and natural hazard events are accompanied with ionospheric disturbances at different spatial and temporal scales. For example, multi-scale-ionospheric GNSS-TEC (Global Navigation Satellite Systems- Total Electron Content) disturbances are observed during certain periods of time before and after the main phase of geomagnetic storms and earthquakes. Rocket launches are also accompanied with TEC-waves of different scales. Earlier it was revealed that both existence time and propagation distances are substantially different for the ionospheric waves at different scales. The smallscale ionospheric turbulences have weaker intensity, but they live longer and propagate with different speeds in comparison to the large-scale ionospheric disturbances. Thus, we could consider small-scale ionospheric disturbances as an additional means to improve the efficiency and reliability of ionospheric activity monitoring. In this report, the second-order derivative of the GPS signal phase is considered as a promising means to detect the small-scale weak ionospheric disturbances. Our modeling and experimental results show that the second-order derivative of the GPS-signal phase can be utilized to detect the weak small-scale ionospheric disturbances with size of decades and hundreds of meters. As the single-frequency data interpreting strictly depends on the L2P(Y) or L2C data were processed we discuss the likely cause for these differences: L1-aided tracking used to track both the L2P(Y) and L2C signals as well.
Recent Publications
1. V V Demyanov (2012) Ionospheric super-bubble effects on the GPS positioning relative to the orientation of signal path and geomagnetic field direction. GPS Solutions. 16:181-189. Doi:10.1007/s10291-011-0217-9.
2. E L Afraimovich et al. (2013) A review of GPS/GLONASS studies of the ionospheric response to natural and anthropogenic processes and phenomena. J. Space Weather Space Clim. 3:1-19 Doi:10.1051/swsc/2013049.
3. V V Demyanov and R V Likhota (2015) The method of GNSS positioning availability control for transportation applications. Machines, Technologies, Materials. Issue (5):11-13. ISSN 1313-0226.
4. V.V. Demyanov, Yu. V. Yasyukevich, T.V. Kashkina, I.F. Gamayunov Non-stationary variations of the carrier phase acceleration of the trans-ionospheric satellite signals of GPS and GLONASS // Electromagnetic Waves and Electronic Systems (2015) 2 (Vol.20): 22-31.
5. V V Demyanov, Yu V Yasyukevich and S G Jin (2013) Effects of Solar Radio Emission and Ionospheric Irregularities on GPS/GLONASS Performance. In Geodetic Sciences - Observations, Modeling and Applications. ISBN: 978-953-51- 1144-3.

Biography :

Vladislav V Demyanov, DrSc in Engineering, has been working as a Full Professor of Irkutsk State Transport University since November, 2009. He works as a Senior Research Scientist of the GNSS Remote Sensing Research Group, Institute of Solar and Terrestrial Physics (Siberian Branch of Russian Academy of Science). His research interest include: space weather- geomagnetic storms and solar radio flares and their impact on GNSS and SBAS performance; GNSS\SBAS integrity and positioning availability control under irregular external impacts; GNSS remote sensing of the ionosphere; GNSS application on transportation.