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.
s 10 log R C N o EIRP L s L a G r T s 228.6 C N EIRP L s L a G r T s 228.6 10logB RIP E b N o G r T s ... (Land Mobile Radio) Freq at Risk: Int’l & US Commercial encroachment GPS L2: 1227.6 Mhz L1: 1575.42 12GHz Ka. 90 90 0 ... • Spread Spectrum • Narrow beamwidths • On board processing • Nulling antennas.
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