Transcription of Satellite Communication - MIT OpenCourseWare
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Satellite CommunicationCol John KeeseeSatellite Communications Architecture Identify Requirements Specify Architectures Determine Link Data Rates Design & Size each link Document your rationaleDefinition Uplinks Downlinks Crosslinks Relays TT & CUplinkDownlinkIntersatellitelinksRelay satelliteRelay satelliteRelay satelliteSensor satelliteSensor satelliteCrossover orIntersatellitelinksMission dataLaunchphaseTT&CTT&CSatelliteGround stationTT&CTracking, Telemetry and ControlThe communications architecture consists of satellites and ground stations interconnectedwith communications links. (Adapted from SMAD.)Architectures:Defined by Satellite -Ground Geometry Store & Forward Geostationary Molniya Geostationary/ Crosslink LEO/ CrosslinkAdapted from :Defined by Function System Function Tracking Telemetry & Command Data Collection Data Relay Satellite Design Onboard Processing Autonomous Satellite Control Network ManagementCom
INTELSAT, inmarsat INTELSAT TELEDESIC, COMERCIAL, iridium,odyssey (gateway links) SPACEWAY, CYBERSTAR, ASTROLINK TELEDESIC iridium, odyssey (gateway links) Com’l. L Com’l. S Com’l. C Com’l. Ku Com’l. Ka 3 GHz 30 GHz UHF CKu SHF 300 MHz SATCOM Frequencies Usage ALL CAPS = Fixed Satellite ervice (FSS) small case = Mobile Satellite ...
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