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Abstract
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| Nowadays, earth stations for downloading data from LEO (Low Earth Orbit) satellites use large reflector antennas. These antennas pose a number of impairments regarding their mechanical complexity, lower flexibility, network efficiency and higher cost. Furthermore, reflector antennas can track only one satellite at a time, so the efficiency of the earth segment is reduced. In order to improve the performance of traditional earth stations, alternative antenna technologies shall be considered. A possibility explored in this contribution makes use of antenna arrays with smaller individual radiating elements, combined with digital signal processing. Bearing this in mind, a comparative study of several beamforming and signal tracking algorithms is presented, based on a Software Defined Radio (SDR) Test-Bed platform. For most of our simulations and measures we will consider the NOAA (National Oceanic and Atmospheric Administration) satellites and more specifically the APT (Automatic Picture Transmission) signal. | |
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International
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Si |
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Congress
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27th International Communications Satellite Systems Conference |
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960 |
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Place
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EDIMBURGO (ESCOCIA) |
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Reviewers
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Si |
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ISBN/ISSN
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978-1-84919-132-6 |
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Start Date
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01/06/2009 |
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End Date
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04/06/2009 |
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From page
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1 |
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To page
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4 |
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Proceedings of 27th International Communications Satellite Systems Conference |