The Impact of Harmattan Particles on Microwave Propagation in the Savannah Region
D. D. Dajab, Naldongar Parfait, E.A. Adedokun "The Impact of Harmattan Particles on Microwave Propagation in the Savannah Region". International Journal of Computer Trends and Technology (IJCTT) V29(1):40-45, October 2015. ISSN:2231-2803. www.ijcttjournal.org. Published by Seventh Sense Research Group.
Abstract -
Harmattan intensity may be so great that visibility at ground level is reduced to less than a
hundred meters by the dust clusters. The precipitations like snow, rain absorb and scatter
electromagnetic energy leading to cancellation in its signal strength. In this paper, the records of
ground level visibility during harmattan will be analyzed with respect to the approximated particle
rate (or density) of harmattan. The specific particle attenuation possible on radio frequency
signals during harmattan was analyzed, computed and plotted results obtained. The attenuation
variations obtained indicates a significant loss in power during harmattan periods.
References
1. .Naldongar Parfait, An assessment of the Impact of
Harmattan Particles on Microwave Propagation in
the Savannah Region, M.Sc thesis, Electrical
Engineering Department, Ahmadu Bello
University, Zaria.2007, (unpublished).
2. D.D. Dajab, perspectives on the effects of Harmattan
on Radio Frequency Waves, Journal of Applied
sciences Research, INSInet publication November
2006, (pages 1014-1017).
3. Neyman, A.B “Study of short wave reception in Zaria
“PhD dissertation, Electrical Engr Dept. A.B.U,
1981(pages 1-2; 62-63).
4. Records, (2004, 2005, 2006); Meteorological
Department International Airport of N’djamena
ASECNA (Chad)
5. D.D Dajab, Characterisation and Modelling of
900MHz Indoor Wireless communication channels
in the savannah region, PhD. Dissertation,
Electrical Eng. Dept. Ahmadu Bello University,
Zaria 2005, (pages 45-52; 144-152)
6. M. Ezekiel method of correlation analysis, 2nd edition,
New York, John Wiley, 1941, Chap 12.
Keywords
harmattan, specific particle attenuation and radio frequency.