Estimation of the refractivity gradient from measured essential climate variables in Iyamho-Auchi, Edo State, South-South Region of Nigeria [PDF]
, 2020 Meteorological variables are crucial constituents in the estimation of refractivity disseminations and the uncharacteristic radio wave propagation situations of the troposphere as a result of their impact on radio wave communication relations over the ...
Kingsley Eghonghon Ukhurebor +3 more
core +1 more source
Long-Term Characterization of Vertical Radio Refractivity Gradients and Tropospheric Propagation Conditions over North-Central Nigeria Using ERA5 Reanalysis Data [PDF]
Physics AccessThis study presents a comprehensive long-term evaluation of vertical radio refractivity and refractivity gradients over selected locations in North-Central Nigeria.
Usman S Lami +11 more
doaj +1 more source
On the Use of Adjoint Methods for Refractivity Estimation in the Troposphere [PDF]
, 2020 This paper presents a preliminary study of a new inversion strategy combining the method of adjoint applied to the wide-angle parabolic equation and the method of split-step wavelet for tropospheric refractivity estimation.
Diouane, Youssef +5 more
core +1 more source
Earth and Space Science, 2019 The Global Navigation Satellite System (GNSS) has proved to be a powerful tool for applications in meteorology. In this study, we propose a novel slant tropospheric delay (STD) model to obtain the vertical distribution of atmospheric refractivity based ...
Pengfei Xia +4 more
doaj +1 more source
Comparison of three vertical refractivity profiles in the Gulf region
, 2013 NoIn this paper, a set of local radiosonde meteorological data, from 1990 to 2005, have been used to statistically analyze the refractivity gradient, DeltaN, at the lowest 65 m, 100 m and 1 km of the atmosphere above the surface of the Earth in the Gulf ...
Rodriguez, Jonathan +6 more
core +3 more sources
Utö Observatory for Analysing Atmospheric Ducting Events over Baltic Coastal and Marine Waters
Remote Sensing, 2023 Maritime safety relies on navigation, detection, and radio communication technologies that function through electromagnetic radiation. Propagation of electromagnetic radiation can be impacted by a disruptive phenomenon known as ducting.
Laura Rautiainen +10 more
doaj +1 more source
Radio Refractivity Study in Akure-Owo Digital Microwave Link in South Western Nigeria [PDF]
, 2015 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
Otasowie, PO, Edeko, FO
core +1 more source
Calculation of Effective Earth Radius and Point Refractivity Gradient in UAE
International Journal of Antennas and Propagation, 2010 A large set of 14 years of reliable local radiosonde meteorological data, from 1990 to 2003, has been used to calculate the effective Earth radius and point refractivity gradient in the United Arab Emirates.
Abdulhadi Abu-Almal, Kifah Al-Ansari
doaj +1 more source
Atmosphere, 2021 This study investigated the relationship between variations in the atmospheric boundary layer height (ABLH) and typhoons over the Northwest Pacific using global navigation satellite system (GNSS) radio occultation (RO) data during the local summer ...
Jiaqi Shi +4 more
doaj +1 more source
Evaluation of Refractivity Gradient and k-factor within the Lower Troposphere of Maiduguri and Enugu under Two Climatic Zones in Nigeria [PDF]
, 2023 Estimation of radio refractivity is important in the planning and design of terrestrial radio communication links for the availability and accessibility of strong networks and signals.
Omotosho, T. V. +7 more
core +1 more source