Performance Analysis of Microwave Radio Refractivity on Radio Field Strength and Radio Horizon Distance Over Akure, Nigeria

Adediji, A. T.; Ismail, Mahamod; Mandeep, J. S.

doi:10.1007/s11277-014-1963-0

Cited by 11 publications

(20 citation statements)

References 12 publications

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“…This is due to the influence of the Atlantic Ocean on the station and also high humidity and water vapour. [4,17] where they obtained mean value of surface refractivity for five years to be 364.74 N-units and 369 Nunits respectively. Similarly, [18] obtained a mean value of surface refractivity of 365 N-units and 367 N-units for years 2007 and 2008 respectively over Akure.…”

Section: Seasonal Variation Of Surface Refractivity Over the Stationsmentioning

confidence: 98%

“…Annual mean along the South-Eastern Atlantic coast is about 400 cm. These rainfall regimes endow Nigeria with two broad vegetation belts that comprise the Forest to the south and the savannah to the north [4,6]. Fig.…”

Section: Climatic Characteristics Of Nigeriamentioning

confidence: 99%

“…Moreover, how far a radio signal will travel within the radio horizon is determined by the distribution of the radio refractivity. Mobile communication systems employ the microwave frequency bands because of its broad bandwidth [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers have studied Electromagnetic wave (EMW) medium interaction processes and the propagation implications over Nigeria, especially the study of variation of radio field strength and radio horizon distance over few stations in Nigeria [2,4]. This is not enough to generalise the variation of radio field strength and radio horizon distance over Nigeria, due to variation of meteorological parameters in each geographical location.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of Radio Horizon Distance Using Measured Meteorological Parameters over Some Selected Locations in Nigeria

Adediji

Adebusola

Ojo

2019

AJOPACS

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In this study, results of the variation of maximum and minimum radio horizon distance derived from the computation of surface refractivity through measurement of temperature, relative humidity and pressureacrosssevenlocations((Akure (7.15°N, 5.12°E), Lagos (6.30°N, 3.20°E), Abuja (7.10°N, 9.25°E), Jos (9.50°N, 8.50°E), Makurdi (7.30°N,8.53°E), Port-Harcourt(4.20°N,7.00°E), and Nsukka (6.90°N,7.67°E)) in Nigeria are presented. Two years (Jan., 2011–Dec., 2012) archived data as provided by Tropospheric Data Acquisition Network (TRODAN) of the Centre for Atmospheric Research Anyigba, Kogi State were utilized for the study. Results showed that the values of surface refractivity (Ns) were low during the dry season months and high during the wet season months and also there was high value of NS at the coastal areas compared with the inland areas. It was also deduced that the mean value of NS for Abuja, Akure, Jos, Lagos, Markurdi, Nsukka and Port-Harcourt is 355, 362, 303, 391, 375, 361 and 399 N-units respectively. Results showed that the Radio Horizon Distance (RDH) values were generally low during the wet season months and high during the dry season months. The variability of radio horizon distance of transmitting antennas is higher in the Northern part of Nigeria than the southern part.

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Section: Seasonal Variation Of Surface Refractivity Over the Stationsmentioning

confidence: 98%

Section: Climatic Characteristics Of Nigeriamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Estimation of Radio Horizon Distance Using Measured Meteorological Parameters over Some Selected Locations in Nigeria

Adediji

Adebusola

Ojo

2019

AJOPACS

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show abstract

“…Field strength meters are used for such applications as cellular, broadcasting, Wi-Fi and a wide variety of other radio related applications. Several researchers have studied electromagnetic wave (EMW) medium interaction processes and the propagation implications over Nigeria, especially the study of variation of radio field strength and radio horizon distance over few stations in Nigeria [2,6]. This is not enough to generalise the variation of radio field strength and radio horizon distance over Nigeria, due to variation of meteorological parameters in each geographical location.…”

Section: Introductionmentioning

confidence: 99%

Variability of Microwave Radio Refractivity and Field Strength over Some Selected Locations in Nigeria

Adediji

Adebusola

Ojo

2017

PSIJ

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Comparative assessment of radio occultation-based refractivity measurements from the COSMIC mission and in-situ atmospheric measurements in equatorial Africa

Nzeagwu

Urama

Chukwude

et al. 2021

Meteorol Atmos Phys

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Performance Analysis of Microwave Radio Refractivity on Radio Field Strength and Radio Horizon Distance Over Akure, Nigeria

Cited by 11 publications

References 12 publications

Estimation of Radio Horizon Distance Using Measured Meteorological Parameters over Some Selected Locations in Nigeria

Estimation of Radio Horizon Distance Using Measured Meteorological Parameters over Some Selected Locations in Nigeria

Variability of Microwave Radio Refractivity and Field Strength over Some Selected Locations in Nigeria

Comparative assessment of radio occultation-based refractivity measurements from the COSMIC mission and in-situ atmospheric measurements in equatorial Africa

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