Characterizing the accuracy of Global Positioning System for single point positioning at African low-latitude region

Autor:	B. Adeyemi, Olugbenga Ogunmodimu, O. E. Abe, I. Emmanuel, Temitope Seun Oluwadare, E.J. Oluwadare
Rok vydání:	2021
Předmět:	Atmospheric Science General Energy Low latitude Horizontal and vertical business.industry Physics::Space Physics Geography Planning and Development Global Positioning System Single point Geodesy business Geology Physics::Geophysics
Zdroj:	Journal of Spatial Science
ISSN:	1836-5655 1449-8596
Popis:	This paper examines the accuracy of the Global Positioning System (GPS) within the African low-latitude sector. We evaluated the vertical and horizontal of the single-point positioning (SPP) accuracy of GPS and critically analysed the effects of the equatorial ionospheric anomaly (EIA) over the region of study. Our results imply that using single-frequency GPS for any application could give a positioning error up to 45.00 m vertically and ~25.00 m horizontally. The study revealed that 54% of GNSS positioning errors during the night-time could be linked to ionospheric plasma irregularities. Also, positioning errors are higher in western Africa than in the eastern region. The influence of geomagnetic activities is not consistent with GPS positioning accuracy. However, positioning errors are lower during geomagnetically disturbed conditions in comparison to quiet conditions. The unique phenomena of the EIA can severely limit GPS services at night-time for positioning in the study area.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57b1cf8d32736edcb5d4d23f897e2dd5 https://doi.org/10.1080/14498596.2021.1934577 Zobrazit plný text záznamu