Results 1 to 10 of about 4,342 (100)

Comparative Analysis of Binhu and Cosmic-2 Radio Occultation Data

open access: yesRemote Sensing, 2022
Global Navigation Satellite System (GNSS) radio occultation (RO) technology has been widely used in Earth atmospheric detection and has a significant impact on numerical weather prediction (NWP), climate detection, and other fields. Cosmic-2 LEO-1 (C2E1)
Hongjie Zhang   +7 more
doaj   +1 more source

Estimation of refractivity uncertainties and vertical error correlations in collocated radio occultations, radiosondes, and model forecasts [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
Random uncertainties and vertical error correlations are estimated for three independent data sets. The three collocated data sets are (1) refractivity profiles of radio occultation measurements retrieved from the Metop-A and B and COSMIC-1 missions, (2) 
J. K. Nielsen   +3 more
doaj   +1 more source

Effect of Magnetic Coupling on the Optical Properties of Oxide Co Nanowires on Vicinal Pt Surfaces

open access: yesMagnetochemistry, 2023
Nowadays, modern scientific research has sparked a renewed interest to study the interaction of electromagnetic field (EM) with magnetic nanostructures and in particular in nanophotonics and spintronics.
Kseniya M. Tsysar   +2 more
doaj   +1 more source

Optical refraction detection method for emulsion concentration

open access: yesMeikuang Anquan, 2021
This paper introduced three kinds of emulsion concentration detection schemes based on optical refraction, and the prism internal reflection method is chosen as the detection method. Several kinds of emulsions were prepared, their refractive indexes were
LUO Tienan
doaj   +1 more source

The Retrieval of Wet Refractivity Index by Tomography Using Spherical Cap Harmonics [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2022
In this research, three-dimensional and four-dimensional tomography is used to demonstrate the distribution of wet refractivity index of the troposphere.
Masoud Dehvari   +2 more
doaj   +1 more source

Global analysis of atmospheric refractivity profiles from COSMIC GPS radio occultation soundings [PDF]

open access: yesGeodetski 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
doaj   +1 more source

Spatial and Seasonal Estimation of Tropospheric Radio Refractivity in Nigeria

open access: yesAfrican Scientific Reports, 2022
The spatial and seasonal variation of tropospheric radio refractivity of Nigeria has been studied using meteorological variables (temperature, relative humidity and pressure) retrieved from the archive of the United States’ National Aeronautics for ...
M. M. Tanko   +3 more
doaj   +1 more source

Refractive Index Quality Control and Comparative Analysis of Multi-source Occultation Based on Sounding Observation

open access: yes应用气象学报, 2020
Three occultation refractive index data of COSMIC, Metop-A and FY-3C from 1 September 2017 to 31 August 2018 are divided into four climate zones according to climate characteristics, so that the dataset is more consistent with the normal distribution ...
Guo Qiyun   +3 more
doaj   +1 more source

Study of an Atmospheric Refractivity Estimation from a Clutter Using Genetic Algorithm

open access: yesApplied 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
doaj   +1 more source

A Modified Radiopropagation Multipath Model for Constant Refractivity Gradient Profiles [PDF]

open access: yesJournal 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
doaj   +1 more source

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