http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/120 2026-02-19T15:15:10Z 2026-02-19T15:15:10Z Muhammad, Sadiq Ezenwora, Joel Aghagbunam Ibrahim, Aku Godwin Kingsley, Chidozie Igwe http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29646 2025-05-15T10:38:23Z 2024-01-01T00:00:00Z

Title: A Review on Renewable Energy Power Supply Sources as an Option for Power Generation Authors: Muhammad, Sadiq; Ezenwora, Joel Aghagbunam; Ibrahim, Aku Godwin; Kingsley, Chidozie Igwe Abstract: Education is an essential tool to maintain steady development and strengthen human resources in any country. The development of any nation depends largely on her technical prowess and capabilities. The need for energy to satisfy the country technical training institution for the avoidance of unemployed graduate and unplanned production of irrelevant skilled should be a priority for effective national building as majority of the institution are having unreliable power supply. Implementing renewable energy policy intensely in this institution will aid to achieve the workforce for the purpose of initiating, facilitating and implementing technological development of a nation. The study examined opportunities associated with renewable energy resources and challenges to meet electricity demands in Nigeria technical Institution. The findings revealed that if solar, wind, biomass and small hydro power resources are integrated and fully harnessed it would help to achieve the goal of renewable energy by providing sustainable and reliable power, reduce emission and offer clean energy.

2024-01-01T00:00:00Z Mohammad, Adamu Kingsley, Chidozie Igwe Joel, Aghaegbunam Ezenwora Elijah, Olusayo Olurotimi http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29528 2025-05-12T17:52:19Z 2025-01-01T00:00:00Z

Title: Assessment of Rain Attenuation for Terrestrial Communication Links in Kaduna State, Nigeria Authors: Mohammad, Adamu; Kingsley, Chidozie Igwe; Joel, Aghaegbunam Ezenwora; Elijah, Olusayo Olurotimi Abstract: Designing satellite and terrestrial communication links requires accurate predictions of rain rate and rain attenuation because rain-fade and its dynamic fluctuations have consistently been detrimental to received signals, especially in tropical regions known to be prone to heavy rainfall. Nigeria's rain is characterized by heavy rainfall, frequent rainfall occurrences and a greater abundance of large raindrops when compared to temperate regions. Research on prediction of rain attenuation has become a necessity in the study area, as the study of rain attenuation prediction in Kaduna State is minimal (if available). Also, research and forecast by NIMET indicated that the northwestern region of Nigeria is expected to face a significant rainfall event in the coming days, which could lead to flooding and hazardous conditions (signal attenuation) that requires preparedness and mitigation efforts by authorities and resident. This study looks into the effect of rain-induced attenuation on microwave and millimeter wave propagation for terrestrial communication links in Kaduna State, Nigeria. 36 years (1986-2022) daily rainfall (mm) data was obtained from the Nigerian Meteorological Agency (NIMET) Abuja. The rainfall accumulation (mm) was converted to 1 minute rain rate (mm/h) using the Chebil rain rate model, while rain attenuation values were computed using the ITU-R P. 530-17 rain attenuation model. The analysis shows that Kaduna State has a rainfall rate of 106.12mm/hr at 0.01% of time exceedance. For the rain attenuation analysis, higher attenuation values were recorded at higher frequencies. At 25 GHz and 20 km path length, values of 103 dB and 127 dB were predicted for vertical and horizontal polarisations respectively, while 165 dB and 188 dB were predicted for vertical and horizontal polarizations respectively at 40 GHz. Hence, the findings show that the attenuation become higher at horizontal polarisation than at vertical polarisation.

2025-01-01T00:00:00Z K. D., Muhammed K. C., Igwe J. A., Ezenwora http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29473 2025-05-11T19:10:26Z 2022-01-01T00:00:00Z

Title: Computation of Radio Refractivity Using Machine Learning Techniques Authors: K. D., Muhammed; K. C., Igwe; J. A., Ezenwora Abstract: In this paper, different programming languages such as R, MATLAB and Python; framework such as Sci-kit learn; and algorithms such as Regression and Artificial Neural Network (ANN) were used to compute radio refractivity in Abuja, Northcentral Nigeria. The upper air data of atmospheric parameters were collected from the Nigerian Meteorological Agency (NiMet), Abuja, Nigeria with a radiosonde. The data collected are pressure, temperature and relative humidity. The algorithm with the best results for radio refractivity computation was selected, though it was observed that all the algorithms utilised for the computation performed well. However, the ANN performed best as predicted and actual values of radio refractivity were closely related and relative errors were lower compared to other programming languages and algorithms. Hence, it was concluded that using ANN along with MATLAB would be the best algorithm and programming language for computing radio refractivity successfully.

2022-01-01T00:00:00Z Aaron, Tsado Kolo Moses, Stephen Abiodun Joel, Aghaegbunam Ezenwora http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29472 2025-05-11T18:47:34Z 2019-01-01T00:00:00Z

Title: Determination of Coverage Area of Nigerian Television Authority (NTA), Television Signal in Kebbi State, Nigeria Authors: Aaron, Tsado Kolo; Moses, Stephen Abiodun; Joel, Aghaegbunam Ezenwora Abstract: The worldwide development of thousands of terrestrial broadcasting networks over the past 90 years depended crucially upon the prediction and measurement of radio field strength. This work determines the actual coverage area of NTA television signal in Kebbi State, Nigeria, by quantitatively measuring the signal level of the signal. The signal level of the transmitter of Nigeria Television Authority (NTA), Birnin-Kebbi channel 39 (615.25 MHz), and the corresponding distances were measured along some radial routes with the transmitting stations as the reference point.This measurement was taken using Digital Signal Level Meter and Global Positioning System (GPS). From the data obtained, Surfer 13 software application was used to draw contour map of the signal level around the transmitting station to determine the coverage areas of the station. The result obtained show that the present configuration of the transmitter of the television station does not give an optimal coverage of the state. Only 4.05% of the entire land mass of the state has television signal coverage. Consequently, greater percentage of Kebbi State is completely out of NTA television signal coverage. So, there is need to have repeater stations at some intervals to ensure reception of the television signal throughout the state.

2019-01-01T00:00:00Z