NOTICE: Use the parameters below to customize your search. Regular expressions and bolean "AND" will be used to match the search. In the case of "Author name", the search is performed using only for the last name.
Found 4 entries in the Bibliography.
Showing entries from 1 through 4
Morphologies of ionospheric-equivalent slab-thickness and scale height over equatorial latitude in Africa
Accurate representation of ionospheric equivalent slab thickness (τ) and scale height (Hm) plays a crucial role in characterizing the complex dynamics of topside and bottomside ionospheric constituents. In the present work, we examined the corresponding morphologies of ionospheric profile parameters with collocated global positioning system (GPS) and Digisonde Portable Sounder (DPS) setups at an equatorial location in west Africa Ilorin (8.50°N, 4.68°E), during a low solar activity year 2010. The extracted τ from GPS and ...
Odeyemi, Olumide; Adeniyi, Jacob; Oyeyemi, Elijah; Panda, Sampad; Jamjareegulgarn, Punyawi; Olugbon, Busola; Oluwadare, Esholomo; Akala, Andrew; Olawepo, Adeniji; Adewale, Adekola;
Published by: Advances in Space Research Published on: jan
YEAR: 2022   DOI: 10.1016/j.asr.2021.10.030
Global positioning system; Digital portable sounder; Equatorial latitude; Equivalent slab thickness; scale height
The distribution characteristics of GPS cycle slip over the China mainland and adjacent region during the declining solar activity (2015--2018) period of solar cycle 24
The Global Positioning System (GPS) cycle slip has a marked impact on the application of communication and navigation systems and therefore is one of the main concerns of the user and designer of terminal systems. In this study, we analyzed the temporal and spatial characteristics of cycle slip events using the GPS data detected from 260 observations in the China sector during the period of the year 2015–2018. The results show that the temporal variations of cycle slips are dependent on the local time, seasons, and solar a ...
Geng, Wei; Huang, Wengeng; Liu, Guoqi; Liu, Siqing; Luo, Binxian; Chen, Yanhong;
Published by: Radio Science Published on: may
YEAR: 2021   DOI: 10.1029/2020RS007196
Monitoring; Delays; Global positioning system; Indexes; Receivers; Satellite broadcasting; Signal to noise ratio
Effects of the 12 May 2021 Geomagnetic Storm on Georeferencing Precision
In this work, we present the positioning error analysis of the 12 May 2021 moderate geomagnetic storm. The storm happened during spring in the northern hemisphere (fall in the south). We selected 868 GNSS stations around the globe to study the ionospheric and the apparent position variations. We compared the day of the storm with the three previous days. The analysis shows the global impact of the storm. In the quiet days, 93\% of the stations had 3D errors less than 10 cm, while during the storm, only 41\% kept this level o ...
Valdés-Abreu, Juan; Díaz, Marcos; Báez, Juan; Stable-Sánchez, Yohadne;
Published by: Remote Sensing Published on: jan
YEAR: 2021   DOI: 10.3390/rs14010038
Geomagnetic storms; total electron content; global navigation satellite system; Global positioning system; precise point positioning; rate of change of the tec index
Effect of intense geomagnetic storms on low-latitude TEC during the ascending phase of the solar cycle 24
The results presented in this paper are obtained from low-latitude ionospheric total electron content (TEC) variation during the chosen geomagnetic storm events happening during the solar cycle 24. We include the four intense geomagnetic storms that occurred on 26 September 2011, 15 July 2012, 19 February 2014 and 20 December 2015, depending upon the availability of TEC data. For this, we have used the TEC data from low-latitude station Varanasi (geographic latitude 25°, 16′N, geographic longitude 82°, 59′E and geomagn ...
Singh, Abha; Rathore, Vishnu; Kumar, Sanjay; Rao, S.; Singh, Sudesh; Singh, A.;
Published by: Journal of Astrophysics and Astronomy Published on: aug
YEAR: 2021   DOI: 10.1007/s12036-021-09774-8
geomagnetic storm; Global positioning system; low latitude; total electron contents