Satellite

Satellite Communication

• Earth Segment

  • Ground Station(s)
  • PSTN / IP
  • TX / RX
  • "Wireless bridge"
    • Kind of what an AP does for us

• Space Segment

  • Satellites in orbit
  • Platform
  • Payload
    • Computer inside of the enclosure
  • May separate TX / RX
  • Support multiple service areas
  • Support ground and space-based partners

• The jump from earth to orbit adds a lot of latency

• Starlink satellites are hovering over to the earth, takes less time to get to the satellite so it has lower delay.

Interplanetary Internet

• Space Communications Protocol Specifications
• Latency 8-40 mins to Mars on a good day?
• IP-like protocols, customized for long delays
  • Get from ground station to the satellite
  • Satellite communicates with other satellites
  • Those other satellites reach mars.
• NASA SCAN (Space Communication and Navigation)
  • Near Earth Network, Space Network, Deep Space Network