The increasing use of satellites has led to the saturation of lower frequency bands. Consequently new technological solutions are being investigated so that higher bands can be exploited by the next generation of communication systems, giving access to wider bandwidths. However high frequencies are subject to many tropospheric impairments, including absorption and scattering due to rain, clouds and gases. In this context, the study conducted in this thesis investigates the characterization and prediction of the tropospheric attenuation for high frequency Earth-space links using The Weather Research and Forecasting model (WRF). Specifically, the link between the Alphasat satellite and the ASI ground station located in Spino d'Adda was studied at the frequency of 19.7GHz. The accurate characterization of the tropospheric signal attenuation represents a main challenge for the design of new satellite communication systems.
Un utilizzo crescente dei satelliti ha portato alla saturazione delle bande di frequenza più basse. Di conseguenza si stanno studiando nuove soluzioni tecnologiche in modo che le bande più alte possano essere sfruttate dalla prossima generazione di sistemi di comunicazione, dando accesso a larghezze di banda più ampie. Tuttavia le frequenze alte sono soggette a molti disturbi troposferici, inclusi assorbimento e dispersione dovuti a pioggia, nuvole e gas. In questo contesto, lo studio condotto in questa tesi indaga la caratterizzazione e la previsione dell'attenuazione troposferica per collegamenti Terra-Spazio ad alta frequenza utilizzando il modello WRF (Weather Research and Forecasting). Nello specifico è stato studiato il collegamento tra il satellite Alphasat e la stazione di terra ASI situata a Spino d'Adda alla frequenza di 19,7GHz. L'accurata caratterizzazione dell'attenuazione del segnale troposferico rappresenta una sfida principale per la progettazione di nuovi sistemi di comunicazione satellitare.
Investigation of propagation conditions along earth-space links by means of high resolution numerical weather predictions
Mcainsh, Cameron
2019/2020
Abstract
The increasing use of satellites has led to the saturation of lower frequency bands. Consequently new technological solutions are being investigated so that higher bands can be exploited by the next generation of communication systems, giving access to wider bandwidths. However high frequencies are subject to many tropospheric impairments, including absorption and scattering due to rain, clouds and gases. In this context, the study conducted in this thesis investigates the characterization and prediction of the tropospheric attenuation for high frequency Earth-space links using The Weather Research and Forecasting model (WRF). Specifically, the link between the Alphasat satellite and the ASI ground station located in Spino d'Adda was studied at the frequency of 19.7GHz. The accurate characterization of the tropospheric signal attenuation represents a main challenge for the design of new satellite communication systems.File | Dimensione | Formato | |
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Thesis_final.pdf
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Descrizione: Cameron McAinsh, Master of Science in Telecommunication Engineering
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https://hdl.handle.net/10589/175325