Abstract The thirty six years (1979-2014) meteorological data needed to calculate refractivity
gradient is obtained from Era interim build on IFS CY31r2 model. Diurnal cycle of ducting …

A data acquisition system that utilised the open-source Arduino platform was developed to
take real-time ground measurements of primary radio climatological variables of pressure …

Geoclimatic factor variable is one of the most important radio climatic variables in the
planning of the radio links in any region. A fade margin that takes into account multipath …

Accurate estimation of refractivity gradient and geoclimatic factor is highly necessary for
radio signal propagation in clear air environment to cater for fade margin, essential for a …

The main factor impairing radio wave propagation is atmospheric refraction. To account for
fade margin, a crucial component of a reliable radio link, accurate estimates of the refractivity …

In this paper, point refractivity gradient and geoclimatic factor are determined using
radiosonde data on meteorological parameters obtained in Calabar, Nigeria. The …

Atmospheric meteorological parameters (relative humidity, atmospheric pressure, and
temperature) are unique due to the constant difference between them. This paper …

In this paper six months data on primary radioclimatic parameters obtained using
Radiosunde lunched by Nigerian Meteorological Agency (NIMET) in Cross River state …

The incidence of multipath fading in two Nigerian cities is explored in this study utilising the
geoclimatic factor technique and ITUR Recommendation P530-14. Nigerian cities Abuja and …

We investigated the radio frequency channel behavior based on extensive measurements of
signal strength and other propagation parameters up to 1200 m from the base stations …