ASSESSMENT OF NEQUICK MODELAT LAGOS, NIGERIA USING GPS TEC

  • A. O. Adewale
  • Y. O. Migoya Orue E. O. Oyeyemi
Keywords: Ionosphere, Total Electron Content (TEC), NeQuick, GPS

Abstract

Diurnal variation of vertical total electron content (VTEC) over Lagos, Nigeria (6.52
N, 3.390E, dip latitude 3.030 S) during low solar activity period (2010) and a
co
mparison with NeQuick-model-derived VTEC, are presented in this paper. VTEC
g
enerally increases from 0600 h LT and reaches its maximum value at approximately
1400 to 1700 h LT during all months considered. Our result shows that NeQuick
m
odel provide a good prediction during daytime and nighttime at Lagos, although
some improvements are still required in order to have increase navigational accuracy
for single frequency Global Positioning System (GPS) receivers. The pre-sunrise and
noontime deviations between modelled and observed VTEC could arise because
e
ither the peak electron density of the F2 region (NmF2) or the shape of the electron
d
ensity profile, or both, are not well modelled.

Author Biographies

A. O. Adewale

Department of Physics, University of Lagos, Nigeria

Y. O. Migoya Orue E. O. Oyeyemi

Department of Physics, University of Lagos, Nigeria

'Aeronomy and Radiopropagation Laboratory, l C'Tf', Via Beirut 7, Trieste, Italy

Published
2019-03-19
How to Cite
Adewale, A. O., & E. O. Oyeyemi, Y. O. M. O. (2019). ASSESSMENT OF NEQUICK MODELAT LAGOS, NIGERIA USING GPS TEC. UNILAG Journal of Medicine, Science and Technology, 1(1), 34-40. Retrieved from http://ujmst.unilag.edu.ng/article/view/371