Ionospheric Effects on GPS Signal in Low-Latitude Region: A Case Study Review of South East Asia and Africa

Autor:	Wawz Abidin, I. Abba, Kismet Anak Hong Ping, Thelaha Masri, Muhammad, B. V. Pai
Jazyk:	angličtina
Rok vydání:	2015
Předmět:	Low-latitude ionospheric effect GPS TEC SNR Meteorology business.industry GPS signals electronic engineering Signal Physics::Geophysics Atmosphere Troposphere Radio propagation telecommunications Physics::Space Physics Global Positioning System Ionospheric heater Ionosphere business Geology
Zdroj:	Nigerian Journal of Technology; Vol 34, No 3 (2015); 523-529
ISSN:	0331-8443 2467-8821
Popis:	The ionosphere is a significant source of errors affecting L-Band (1-2 GHz) signal propagation using Global Position System (GPS). The propagated GPS signals that passes through the Earth’s atmosphere where affected by ionosphere and troposphere irregularities and caused the signal propagation delay. However, the velocity of signals that propagate within the atmosphere deviates from vacuum line of sight (LOS), while the refractivity of ionosphere and troposphere influence the signal propagation delay causing atmospheric effects due to high electrons density. Both affect the signal in different ways due to their particular refractive properties. The review focuses of some of the previous research studies conducted on empirical modeling of the ionospheric effect in low latitude region. The tabulated findings of such models presented in this article. http://dx.doi.org/10.4314/njt.v34i3.14
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::871e5b1bcaf23ad5ed59accb19ee82ab https://www.ajol.info/index.php/njt/article/view/122384 Zobrazit plný text záznamu