Spatial variation of deterministic chaos in mean daily temperature and rainfall over Nigeria

IA Fuwape, ST Ogunjo, SS Oluyamo… - Theoretical and Applied …, 2017 - Springer
Daily rainfall and temperature data from 47 locations across Nigeria for the 36-year period
1979–2014 were treated to time series analysis technique to investigate some nonlinear …

Quantification of scaling exponents and dynamical complexity of microwave refractivity in a tropical climate

IA Fuwape, ST Ogunjo - Journal of Atmospheric and Solar-Terrestrial …, 2016 - Elsevier
Radio refractivity index is used to quantify the effect of atmospheric parameters in
communication systems. Scaling and dynamical complexities of radio refractivity across …

Variations in Non-Linearity in Vertical Distribution of Microwave Radio Refractivity.

AT Adediji, ST Ogunjo - Progress In Electromagnetics Research M, 2014 - jpier.org
Radio refractivity values obtained for different heights (Ground surface, 50 m, 100 m and 150
m) over a tropical station, Akure, South-Western Nigeria using in-situ data over a period of …

Characterization and investigation of nonlinear behaviour of radio refractivity during the rainy and dry seasons in the coastal region of Nigeria

AE Adeniji, EM Ajeigbe, KS Ojo - Journal of Applied Sciences and …, 2021 - ajol.info
The transmission and receiving of good quality of signals globally has been impaired due to
the internal activities of the troposphere linked to the nonlinear behaviour of the …

[PDF][PDF] Effect of data transformation on long term memory of chaotic time series

S Ogunjo - The African Review of Physics, 2015 - lamp.ictp.it
There are many situations in which chaotic data set has to be subjected to mathematical
manipulations such as differencing, logarithmic scaling, logarithmic differencing, etc. In this …

Predicting radio refractivity using a stochastic model

ST Ogunjo, MO Ajewole, AT Adediji… - 2014 XXXIth URSI …, 2014 - ieeexplore.ieee.org
The radio refractivity of the atmosphere is a very important variable in radio communication.
This paper attempts to model the radio refractivity over a tropical station (Akure …

[PDF][PDF] Chaotic Signature in Power Spectrum and Recurrence Quantification of Dynamical Behaviour of Multivariate Time Series

AE Adenij - Communication in Physical Sciences, 2024 - journalcps.com
This study investigates the presence of nonlinear dynamics and chaotic behaviour in air
temperature, atmospheric pressure, and relative humidity using data collected from Lagos …

Refractivity Gradient Variations and Intertropical Discontinuities Across Nigeria

B Adeyemi, SO Ogodo - International Astronomy and …, 2024 - archive.scholarstm.com
The complexity of the troposphere has a significant impact on radio signal transmission. This
has led to the computation of refractivity gradients, which is an important parameter for the …

[PDF][PDF] Fractal and entropy analysis of nigerian all share index (ASI) and gross domestic product (GDP)

IA Fuwape, ST Ogunjo - 2nd international conference and …, 2015 - researchgate.net
Nigeria is one of the fastest growing economy in the world. This study aims to investigate the
dynamics of two important economic indices in Nigeria–All Share Index (ASI) and Gross …

Statistics of vertical refractivity gradient over Akure, Nigeria

ST Ogunjo, NE Adesiji - … of the International Union of Radio …, 2020 - ieeexplore.ieee.org
Vertical radio refractivity gradient is an important factor for the design and planning of
microwave communication links. In this work, radio refractivity and distribution of vertical …