Space Data Systems

The spacecraft nervous system

CH 05 / 190 WORDSUNPUBLISHED

How information moves between the computers inside one spacecraft.

In this chapter

  • Buses and prioritization
  • Internal communication topology
  • Competing urgency
  • Journey of a bit — inside the spacecraft, from sensor to downlink queue
  • Deep dive — TM Space Data Link & virtual channels
  • Deep dive — SpaceWire & RMAP
  • Deep dive — SpaceFibre
  • Deep dive — MIL-STD-1553
  • Deep dive — CAN-bus & CANopen
  • Deep dive — CCSDS SOIS (onboard interface services)