Journal
INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING
Volume 37, Issue 5, Pages 423-436Publisher
WILEY
DOI: 10.1002/sat.1249
Keywords
Alphasat experiment; atmospheric effects; data processing; measurements; microwave propagation
Categories
Funding
- Agenzia Spaziale Italiana (ASI)
- Istituto Superiore C.T.I., Ministero dello Sviluppo Economico
- Sapienza University of Rome
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Terabit capacity and very high data rates are required for the near-future broadband satellite communication systems, mainly for multimedia services. The increased capacity can be obtained by using the larger bandwidth available at higher frequency bands, like Ka and Q/V. However, severe detrimental atmospheric effects impair radio waves at these bands, which require the extensive use of fade mitigation techniques, such as link power control, site diversity, or on-board adaptive power allocation. The Alphasat Aldo Paraboni propagation experiment was designed and supported by the Italian Space Agency, and implemented by the European Space Agency, to better characterize the atmospheric propagation channel at Ka band and Q band, to support the design of future satellite systems. In Italy, 3 ground stations have been installed and are acquiring the Alphasat beacon signals: the 2 ASI main ground stations in Tito Scalo (Southern Italy) and Spino d'Adda (Northern Italy) and the La Sapienza-FUB station in Roma (Central Italy). The 3 stations cover quite distant locations in Italy, with different climatic characteristics. This paper describes the main features of the experimental setup in the above stations and presents some examples of measurements and results.
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