Article Sidebar
Published:
Jun 29, 2015DOI:
10.4314/njt.v34i3.25Keywords:
Article Details
Copyright belongs to the Faculty of Engineering, University of Nigeria, Nsukka, Nigeria
The contents of the articles are the sole opinion of the author(s) and not of NIJOTECH.
NIJOTECH allows open access for distribution of the published articles in any media so long as whole (not part) of articles are distributed.
A copyright and statement of originality documents will need to be filled out clearly and signed prior to publication of an accepted article. The Copyright form can be downloaded from https://www.nijotech.com/downloads/COPYRIGHT%20FORM.pdf while the Statement of Originality is in Statement of Originality.pdf (nijotech.com)
For articles that were developed from funded research, a clear acknowledgement of such support should be mentioned in the article with relevant references. Authors are expected to provide complete information on the sponsorship and intellectual property rights of the article together with all exceptions.
It is forbidden to publish the same research report in more than one journal.
Main Article Content
Radio Refractivity Study in Akure-Owo Digital Microwave Link in South Western Nigeria
Abstract
This work is a study of radio refractivity in Akure-Owo Digital Microwave Link in South Western Nigeria. Meteorological data of air temperature, atmospheric pressure, relative humidity, and water vapour pressure were measured between January and December 2006 at the observatory centre of the Nigerian meteorological agency (NIMET) situated at Akure Airport. The meteorological data collected were computed to obtain the refractivity, refractivity gradient and earth radius factor. The results of the study show that the refractivity gradient was greater than zero and vary slightly throughout the months of the year 2006. The highest value of refractivity gradient was in April and lowest value in September, the effective earth radius factor was observed to be less than one which implies that there is sub-refraction in the link. Sub refraction is a situation in which the radio signal beam is refracted upwards in the link thereby resulting in microwave link loss.
