Results 261 to 270 of about 392,818 (294)

Rain Attenuation Analysis

1999
This paper present analysis of rain effects on radio propagation. Special emphasis is given on rain attenuation calculation. An alternative method for calculating specific rain attenuation coefficients based on computer simulation is also proposed. This method is very straightforward, easy to use and well adapted for terrestrial and space link design ...
Majurec, Ninoslav, Brajan, Berislav, Tabaković, Željko   +2 more
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Statistical Behavior of Rain Attenuation*

Bell System Technical Journal, 1973
Thirty-one sets of experimental data on the statistics of microwave rain attenuation at frequencies above 10 GHz, in the U.S.A., England, Japan, Italy, and Canada, indicate that: (i) the distribution of rain attenuation α, in dB, is approximately lognormal with a standard deviation σ α of log 10 α ranging from 0.46 to 0.71 for earth-space paths, and ...
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Elevation Scaling of Rain Attenuation Time Series

2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), 2019
In satellite links, the variations in the elevation angle have a strong impact on the magnitude of the attenuation induced by rain because the path-length across precipitation increases with the decrease in the elevation. In particular, it is definitely challenging to identify of a proper way to scale the instantaneous values of rain attenuation with ...
Tomaz L. M., Capsoni C., Luini L.
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Effects of Rain Attenuation on Satellite Video Transmission

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
Heavy convective rain events are often experienced in tropical countries such as Singapore. The operation of high-speed satellite transmission in the Ka-band is therefore susceptible to attenuation. We present the setup of a high-speed link via the WINDS satellite using an ultra small aperture terminals (USAT).
Yee Hui Lee, Stefan Winkler 0001
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The prediction of rain attenuation statistics

Annales des Télécommunications, 1980
The prediction of rain attenuation statistics is a question of meteorology and probability. Therefore, the possible accuracy of these predictions depends on the knowledge of meteorological mechanisms and data as well as on the statistical uncertainty due to the stochastic nature of meteorological events. Attenuations exceeded for less than 0.1 % of the
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Frequency scaling of rain attenuation

IEEE Transactions on Antennas and Propagation, 1977
A simple method of frequency scaling for rain attenuation is presented. This method includes a correction factor for rain inhomogeneity and takes into account the high correlation between peak rainfall rate and attenuation. The results are compared with Drufuca's empirical method.
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On the attenuation of sea waves by rain

Geophysical Fluid Dynamics, 1973
Abstract Some conflicting evidence on Reynolds' (1900) hypothesis that rain should attenuate any wave motion on the sea surface is discussed. It is concluded that rain drops ought to produce vortex rings in the sea which mix the water to a sufficient depth to affect most waves, as asserted by Reynolds.
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Modeling of rain and slant path rain attenuation

2008
The adverse impact of rain on the earth-satellite communications in the region has not been well characterized due to the lack of measured data. In view of the rapid introduction of new business and personal communications networks, based on satellite constellation operation in Ku-band or higher band with low fade-margins, it is of pressing importance ...
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Rain attenuation at 74 Ghz

2010
A millimetric wave transmission link of the radar type has been established at the University of British Columbia campus. It operates at 74 GHz and has a 1.8 km total transmission length. The RF source is an unmodulated klystron and a phase-locked receiver is used to detect the received signal.
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Rain Attenuation Prediction Methods

1986
The evaluation of the effects of rain on a satellite system design requires a detailed knowledge of the attenuation statistics for each ground terminal location at the specific frequency of interest. Direct long-term measurements of rain attenuation for all of the ground terminal locations in an operational network are not practical, therefore modeling
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