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 …

In this work, we present seasonal results of radio field strength and radio horizon distance
derived from the computation of surface refractivity through in-situ measurement of …

This paper presents the evaluation of the wet-term of the surface refractivity for twenty three
sites in Nigeria carefully selected such that there is wide coverage for the country using ten …

The propagation loss on a terrestrial line-of-sight wireless link is influenced by atmospheric
and seasonal conditions. The reliability of the link is also affected by k-factor values which is …

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 …

The need for more bandwidth for a broad range of purposes necessitates research into how
radio refractivity, multipath fading, and geoclimatic variables affect terrestrial and satellite …

In this paper we present seasonal results of the effective earth radius factor distribution in
South Africa using recently (2007-2009) acquired radiosonde data from the South African …

Various researches have shown that the troposphere is a region experiencing varying
degree of anomalous propagation of radio waves owing to its associated varying climatic …

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 …

Radio ducting is a known problem in the coastal areas of the world where it is evident that
they occur frequently and their probabilities of occurrence pose enough operational effects …