Global ETD Search
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Showing 1 to 5 of 5 for “"Fade statistics"”.
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Fade Statistics For A Lasercom System And The Joint Pdf Of A Gamma-gamma Distributed Irradiance And Its Time Derivative
… signal. The result is a randomly fading signal. Fade statistics for lasercom systems are determined from the probability density function (PDF) of the irradiance fluctuations. The expected number of fades per second and their mean fade time require the joint PDF of the fluctuating irradiance and …
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Measurement and validation of rainstorm parameters with the VPI radar
… as a predictor of satellite earth-space path fade statistics. To validate the data collected by the VPI radar for this experiment, the differential reflectivity (ZDR) measured during the November 29-30, 1985 rainstorm is compared with calculated ZDR and ZDR from published plots. The special …
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Effects Of Atmospheric Turbulence On The Propagation Of Flattened Gaussian Optical Beams
… Further, a determination of the probability of fade and of mean fade time under weak fluctuation conditions is determined using the widely accepted lognormal model. Although this model has been shown to be somewhat optimistic when compared to results obtained in field tests, it has value here in …
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Fine-scale modelling of rain fields for radio network simulation
… frequencies are strongly scattered by rain. Rain fade is the mechanism that limits the performance of terrestrial microwave telecommunication systems. To predict the Quality of Service (QoS) at a node in heterogeneous networks of line-of-sight, terrestrial, microwave links; requires knowledge of …
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A Propagation Simulator for Land Mobile Satellite Communications
… have the most reliable information about the statistics of fade duration in order to determine fade margin or to compensate for the fades using modulation and coding scheme. This report describes a simulator, PROSIM, developed at Virginia Tech for simulating a propagation model in land mobile …