Time series predictor of Ku band rain attenuation over an Earth–space path at a tropical location |
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| Authors: | Dalia Das Animesh Maitra |
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| Affiliation: | 1. Department of Electronics and Telecommunication Engineering, Meghnad Saha Institute Technology, Techno Complex, , Madurdaha, Kolkata, 700 150 India;2. S K Mitra Centre for Research in Space Environment, Institute of Radio Physics and Electronics, University of Calcutta, , Kolkata, 700 009 India |
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| Abstract: | A channel model is proposed to predict the time series of Ku band rain attenuation during a rain event at a tropical location. The model is based on considering the Gaussian distribution of the conditional occurrence of rain attenuation with a particular value of the attenuation occurring before. The mean (μ) and standard deviation (σ) for the distribution are modeled with the experimental data. The measured attenuation at a particular time instant is used to obtain μ and σ and to predict the attenuation after certain interval. The channel model has tested well giving the predicted attenuation that agrees with the measured value with a mean error within 15% higher than 1 dB. Validity of the model is also tested with the first‐order and second‐order statistics of attenuation occurrence, on a long‐term basis. The method can also be applied even if attenuation measurements are missing for certain period of time with increased error. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | rain attenuation time series prediction time interval conditional distribution polynomial coefficient |
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