Kriging Interpolation for Constructing Database of the Atmospheric Refractivity in Korea
Remote SensingThis paper presents a Kriging interpolation method for constructing a database of atmospheric refractivity in Korea. To collect as much data as possible for the interpolation, meteorological data from 120 regions of Korea, including both land and sea ...
Doyoung Jang, Nammoon Kim, Hosung Choo
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Atmosphere, 2016 In this paper, we present a new estimation of the atmospheric refractivity profile combining the scattering signal (electromagnetic wave propagation loss) and the direct signal (phase delay). The refractivity profile is modeled using four parameters, i.e.
Qixiang Liao, Zheng Sheng, Hanqing Shi
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A Modified Radiopropagation Multipath Model for Constant Refractivity Gradient Profiles [PDF]
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2023 This paper presents a radiopropagation algorithm based on a Ray Tracing (RT) technique that combines a modified multipath model for constant refractivity gradient profiles and the Uniform Theory of Diffraction (UTD).
D. Parada +5 more
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Global analysis of atmospheric refractivity profiles from COSMIC GPS radio occultation soundings [PDF]
Geodetski Vestnik, 2020 Atmospheric refractivity is a function of temperature, pressure and water vapor. The refractivity retrieved from the Global Navigation Satellite Systems (GNSS) radio occultation soundings has fine vertical resolution and high accuracy, so it can be used ...
Shaoqi Gong +4 more
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Study of an Atmospheric Refractivity Estimation from a Clutter Using Genetic Algorithm
Applied Sciences, 2022 In this paper, a method for estimating atmospheric refractivity from sea and land clutters is proposed. To estimate the atmospheric refractivity, clutter power spectrums based on an artificial tri-linear model are calculated using an Advanced Refractive ...
Doyoung Jang +3 more
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Applied Sciences, 2021 This article proposes a method for the prediction of wide range two-dimensional refractivity for synthetic aperture radar (SAR) applications, using an inverse distance weighted (IDW) interpolation of high-altitude radio refractivity data from multiple ...
Sungsik Wang +4 more
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Influence of weather variables on atmospheric refractivity over Auchi Town, Edo State, Nigeria
Journal of Applied Sciences and Environmental Management, 2018 In this study, atmospheric variables such as air temperature, relative humidity and atmospheric pressure were evaluated in order to determine the atmospheric refractivity over Auchi town in Edo State, Nigeria using a portable weather monitoring system ...
K.E. Ukhurebor +3 more
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Tropospheric Refractivity Profile Estimation by GNSS Measurement at China Big-Triangle Points
Atmosphere, 2021 Atmospheric radio refractivity has an obvious influence on the signal transmission path and communication group delay effect. The uncertainty of water vapor distribution is the main reason for the large error of tropospheric refractive index modeling ...
Xiang Dong +5 more
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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
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High Temporal Resolution Refractivity Retrieval from Radar Phase Measurements
Remote Sensing, 2018 Knowledge of the spatial and temporal variability of near-surface water vapor is of great importance to successfully model reliable radio communications systems and forecast atmospheric phenomena such as convective initiation and boundary layer processes.
Rubén Nocelo López +1 more
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