Modelling of raindrop size distribution in Nigeria for Microwave and millimetre wave application
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Date
1986
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Obafemi Awolowo University
Abstract
Raindrop size data collected using a distrometer measuring system at three geographical
locations in Nigeria namely Calabar, Ile-Ife and Zaria have been analysed for the prediction of
rainfall attenuation at centimeter and millimetre wave frequency bands.
The modeling of the raindrop size distributions has been carried out using the lognormal and
exponential distributions. Models for the three stations as well as a Southern, Northern and ,a
general model for the country have been proposed for the prediction of the effect of tropical
rainfall on electromagnetic propagation at microwave and higher frequencies.
Rain induced specific attenuation values were computed for a frequency range of 1 to 400GHz
using the models obtained for thunderstorm and shower which are very important for
communication systems design.
Description
249p
Keywords
Distrometer, Lognomal distribution, Exponential distribution, Attenuation
Citation
Adimula, I.A. (1986). Modelling of raindrop size distribution in Nigeria for microwave and millimetre wave application