Results 21 to 30 of about 7,241 (305)
Analysis of moderate and intense rainfall rates continuously recorded over half a century and influence on microwave communications planning and rain-rate data acquisition [PDF]
, 1987 This paper is concerned with the statistical investigation of a massive data bank of 49 years of rainfall rate R continuously recorded in Barcelona using a rain-rate gauge with ten seconds response time.
Vilar, Enric +3 more
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Automated rain rate estimates using the Ka-band ARM zenith radar (KAZR) [PDF]
Atmospheric Measurement Techniques, 2015 The use of millimeter wavelength radars for probing precipitation has recently gained interest. However, estimation of precipitation variables is not straightforward due to strong signal attenuation, radar receiver saturation, antenna wet radome effects ...
A. Chandra +4 more
doaj +1 more source
Comparison of Measured Rain Attenuation in the 12.25 GHz Band with Predictions by the ITU-R Model
International Journal of Antennas and Propagation, 2012 Quantitative analysis and prediction of radio attenuation is necessary in order to improve the reliability of satellite-earth communication links and for economically efficient design.
Dong You Choi +3 more
doaj +1 more source
Journal of ICT Research and Applications, 2014 This paper deals with the prediction method using hidden Markov model (HMM) for rain rate and rain propagation attenuation for K-band satellite communication link at tropical area.
Baso Maruddani +3 more
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Attenuation Characteristics of Laser in Rain [PDF]
Proceedings of the 2016 International Conference on Computer Engineering, Information Science & Application Technology (ICCIA 2016), 2016 In the observation of laser signal transmission in the rain, the attenuation ratio with the change of the size of the raindrops, the smaller the smaller the attenuation. In Mie scattering theory, with Weibull distribution model of raindrop size distribution and calculate the laser beam transmission in the rain attenuation characteristics in rainfall ...
Bin Xu, Jun Xu, Yuewei Wei
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Statistics of rain attenuation revisited [PDF]
2011 XXXth URSI General Assembly and Scientific Symposium, 2011 Millimeter frequency satellite links are prone to variations in attenuation over a large range due to rain, more than 30 dB. Traditionally, it has been considered to be part of meteorological conditions, unavoidable variations. Statistical distributions have been fit-to-data type with little or no physical insight.
J. Bach Andersen +2 more
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Sea state and rain: a second take on dual-frequency altimetry [PDF]
, 2004 TOPEX and Jason were the first two dual-frequency altimeters in space, with both operating at Ku- and C-band. Each thus gives two measurements of the normalized backscatter, sigma0, (from which wind speed is calculated) and two estimates of wave height ...
Quartly, G.D.
core +1 more source
IEEE AccessRain attenuation poses a significant challenge for high-throughput communication systems. In response, this paper introduces an artificial intelligence (AI) model designed for predicting and mitigating rain-induced impairments in high-throughput ...
Ali M. Al-Saegh +13 more
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Rain Attenuation Prediction for Terrestrial Microwave Link in Bangladesh [PDF]
Journal of Electrical and Electronics Engineering, 2014 Rain attenuation is a major shortcoming of microwave transmission. As a subtropical country, Bangladesh is one of the highest rainy areas of the world. Thus, designing a terrestrial microwave link is a serious challenge to the engineers.
HOSSAIN Sakir
doaj
Wireless Engineering and Technology, 2010 Rain attenuation values were calculated using empirical raindrop-size distributions, which were, Marshall-Palmer (M-P), Best, Polyakova-Shifrin (P-S) and Weibull raindrop-size distributions, and also calculated using a specific rain attenuation model for prediction methods recommended by ITU-R.
openaire +2 more sources