Ionospheric imaging in Africa

Simple item page
dc.contributor.authorChartier, A.T.
dc.contributor.authorKinrade, J.
dc.contributor.authorMitchell, C.N.
dc.contributor.authorRose, J.A.R.
dc.contributor.authorJackson, D.R.
dc.contributor.authorCilliers, P.
dc.contributor.authorHabarulema, J.
dc.contributor.authorKatamzi, Z.
dc.contributor.authorMckinnell, L.
dc.contributor.authorMatamba, T.
dc.contributor.authorOpperman, B.
dc.contributor.authorSsessanga, N.
dc.contributor.authorGiday, N.M.
dc.contributor.authorTyalimpi, V.
dc.contributor.authorDe Franceschi, G.
dc.contributor.authorRomano, V.
dc.contributor.authorScotto, C.
dc.contributor.authorNotarpietro, R.
dc.contributor.authorDovis, F.
dc.contributor.authorAvenant, E.
dc.contributor.authorWonnacott, R.
dc.contributor.authorOyeyemi, E.O.
dc.contributor.authorMahrous, A.
dc.contributor.authorTsidu, G.M.
dc.contributor.authorLekamisy, H.
dc.contributor.authorOlwendo, J.O.
dc.contributor.authorSibanda, P.
dc.contributor.authorGogie, T.K.
dc.contributor.authorRabiu, B.
dc.contributor.authorDe Jong, K.
dc.contributor.authorAdewale, A.O.
dc.date.accessioned2019-08-27T17:37:19Z
dc.date.available2019-08-27T17:37:19Z
dc.date.issued2013
dc.description.abstractAccurate ionospheric specification is necessary for improving human activities such as radar detection, navigation, and Earth observation. This is of particular importance in Africa, where strong plasma density gradients exist due to the equatorial ionization anomaly. In this paper the accuracy of three-dimensional ionospheric images is assessed over a 2 week test period (2–16 December 2012). These images are produced using differential Global Positioning System (GPS) slant total electron content observations and a time-dependent tomography algorithm. The test period is selected to coincide with a period of increased GPS data availability from the African Geodetic Reference Frame (AFREF) project. A simulation approach that includes the addition of realistic errors is employed in order to provide a ground truth. Results show that the inclusion of observations from the AFREF archive significantly reduces ionospheric specification errors across the African sector, especially in regions that are poorly served by the permanent network of GPS receivers. The permanent network could be improved by adding extra sites and by reducing the number of service outages that affect the existing sites.en_US
dc.identifier.citationAlex T. Chartier, Joe Kinrade, Cathryn N. Mitchell, Julian A. R. Rose, David R. Jackson, Pierre Cilliers, John-Bosco Habarulema, Zama Katamzi, Lee-Anne Mckinnell, Tshimangadzo Matamba, Ben Opperman, Nicholas Ssessanga, Nigussie Mezgebe Giday, Vumile Tyalimpi, Giorgiana De Franceschi, Vincenzo Romano, Carlo Scotto, Riccardo Notarpietro, Fabio Dovis, Eugene Avenant, Richard Wonnacott, Elijah Oyeyemi, Ayman Mahrous, Gizaw Mengistu Tsidu,Harvey Lekamisy, Joseph Ouko Olwendo, Patrick Sibanda, Tsegaye Kassa Gogie, Babatunde Rabiu, Kees De Jong, and Adekola Adewale (2014). Ionospheric imaging in Africa. Radio Science, 49, 19–27, doi:10.1002/2013RS005238.en_US
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/4805
dc.language.isoenen_US
dc.publisherRADIO SCIENCEen_US
dc.subjectRadar detectionen_US
dc.subjectNavigationen_US
dc.subjectEarth observationen_US
dc.subjectGlobal Positioning System (GPS)en_US
dc.subjectSlant total electron content observationsen_US
dc.subjectTime-dependent tomography algorithmen_US
dc.subjectAFREFen_US
dc.titleIonospheric imaging in Africaen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
18 Ionospheric Imaging in Africa.pdf
Size:
2.01 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Physics -Scholarly Publications