Results 21 to 30 of about 8,019 (301)
A modified artificial neural network based prediction technique for tropospheric radio refractivity. [PDF]
PLoS ONE, 2018 Radio refractivity plays a significant role in the development and design of radio systems for attaining the best level of performance. Refractivity in the troposphere is one of the features affecting electromagnetic waves, and hence the communication ...
Shumaila Javeed +4 more
doaj +1 more source
Evaluation of GNSS Radio Occultation Profiles in the Vicinity of Atmospheric Rivers
Atmosphere, 2022 Increasing the density of Global Navigation Satellite System radio occultation (RO) with commercial Smallsats and the next generation COSMIC-2 constellation is expected to improve analyses of the state of atmosphere, which is essential for numerical ...
Michael J. Murphy, Jennifer S. Haase
doaj +1 more source
Refraction problems after refractive surgery
Survey of Ophthalmology, 1988 While refractive surgery such as radial keratotomy, epikeratophakia, and corneal relaxing incisions offer many potential benefits to patients, they can also generate optical problems such as overcorrection or undercorrection of the prior refractive error and variable vision.
Dean McGee Eye Institute, University of Oklahoma, Oklahoma City, Oklahoma, USA ( host institution ) +2 more
openaire +3 more sources
Diurnal Variation of Surface Radio Refractivity over Sokoto, North-western Nigeria [PDF]
Physics Access, 2021 The knowledge of good refractivity profile is vital for proper planning of terrestrial communication links; surface refractivity profile of a station is particularly required for enhanced planning and prediction of performance of terrestrial radio links ...
Mohammed Z Doko +6 more
doaj +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
Remote Sensing, 2021 The radio occultation technique provides stable atmospheric measurements that can work as a benchmark for calibrating and validating satellite-sounding data.
Loknath Adhikari +2 more
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Remote Sensing, 2022 According to GPS radio occultation data from previous studies, the height of the planetary boundary layer (PBLH) is defined as the altitude at which the vertical gradient of refractivity N is at its local minimum, called the gradient approach.
Li Wang, Shengpeng Yang, Lin Lin
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Refraction in radioastronomy [PDF]
Symposium - International Astronomical Union, 1979 In the last few years there was no paper in the astronomical literature reporting on new measurements of radioastronomical refraction. But there are some important review papers on different aspects of this topic, e.g. on the ionosphere by M.M. Komesaroff (1960) and T.
openaire +1 more source
Yearly, Seasonal and Daily Variations of Radio Refractivity [PDF]
, 2011 Yearly, seasonal and daily variations of radio refractivity have been analyzed. The method proposed in the recommendation of International Telecommunication Union ITU has been used.
Tamošiūnaitė, M. +3 more
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The Refraction of the Newborn [PDF]
the american journal of the medical sciences, 1906 n ...
Elschnig, +2 more
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