Transcription of Overview of Satellite Communications - George Mason …
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Overview of Satellite Communications - George Mason …
Overview of Satellite Communications Dick McClure Agenda Background History Introduction to Satcom Technology Ground System Antennas Satellite technology Geosynchronous orbit Antenna coverage patterns 2. communication SATELLITES. Uses Example Satellite systems 3. Why Satellite Communications ? Satellite coverage spans great distances A Satellite can directly connect points separated by 1000's of miles A Satellite can broadcast to 1000's of homes/businesses/military installations simultaneously A Satellite can be reached from ground facilities that move Satellites can connect to locations with no infrastructure Satellites adapt easily to changing requirements Some Common SATCOM Systems The INTELSAT system provides globe-spanning TV coverage The Thuraya Satellite -based phone system covers all of Saudi Arabia and Egypt DoD Military Communications Satellite System Links field sites with Pentagon and US command centers DirecTV, Echostar Direct-to-home TV.
Signal Summer Up Converter 1 Up Converter 2 Up Converter 3 Up Converter n Intermediate frequency from receiver or signal processing Transmitter: High power; moderate distortion; moderate noise RF signal summer: combines signals on multiple frequencies into a common transmitter Up-converter: raises signal frequency to a range where transmission ...
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