Satellite Communication Col John Keesee
Satellite Communication Col John Keesee
Satellite communications Architecture Identify requirements Specify architectures Determine link data rates Design size each link Document your rationale
Satellite Communications Architecture • Identify Requirements • Specify Architectures • Determine Link Data Rates • Design & Size each link • Document your rationale
Definition Uplinks pl Crossover or Relay Downlinks Rel Crosslinks Intersatellite links Relays T&C tt& c TT&C satellit TT&c Tracking, Teler and Control ind station The communications architecture consists of satellites and ground stations interconnected with communications links. (Adapted from SMAD
Definition • Uplinks • Downlinks • Crosslinks • Relays • TT & C Uplink Downlink Intersatellite links Relay satellite Relay satellite Relay satellite Sensor satellite Sensor satellite Crossover or Intersatellite links Mission data Launch phase TT&C TT&C Satellite Ground station TT&C Tracking, Telemetry and Control The communications architecture consists of satellites and ground stations interconnected with communications links. (Adapted from SMAD.)
Architectures Defined by satellite-Ground geometry · Store& Forward · Geostationary Geostationary Orbit molniya · Geostationary C roslin k ·LEO/ Crosslink Adapted from Smad
Architectures: Defined by Satellite-Ground Geometry • Store & Forward • Geostationary • Molniya • Geostationary/ Crosslink • LEO/ Crosslink Adapted from SMAD
Architectures Defined by function System Function Tracking telemetry command Data collection Data relay Satellite design Onboard Processing Autonomous satellite Control Network Management
Architectures: Defined by Function • System Function – Tracking Telemetry & Command – Data Collection – Data Relay • Satellite Design – Onboard Processing – Autonomous Satellite Control – Network Management