The International Telecommunication Union (ITU) recommendation P.838-3 provides a method to calculate the specific attenuation due to rain. Although the model nature is twofold, to hold a physical basis and to maximize the accordance with experimental data, its current implementation comes with some limitations and inaccuracies. In this contribution we highlight some differences observed when a physically based attenuation model is built and used for comparison. Some nonphysical behaviors of the ITU model are spotted with the variation of rain rate, polarization and elevation angle in a significant frequency range for satellite communication links.
Limitations of the ITU-R P.838-3 model for rain specific attenuation
Regonesi, E;Luini, L;Riva, C
2019-01-01
Abstract
The International Telecommunication Union (ITU) recommendation P.838-3 provides a method to calculate the specific attenuation due to rain. Although the model nature is twofold, to hold a physical basis and to maximize the accordance with experimental data, its current implementation comes with some limitations and inaccuracies. In this contribution we highlight some differences observed when a physically based attenuation model is built and used for comparison. Some nonphysical behaviors of the ITU model are spotted with the variation of rain rate, polarization and elevation angle in a significant frequency range for satellite communication links.File | Dimensione | Formato | |
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