An interconnection system for space craft distributed control and data collection
Abstract
Recent changes in the environment of satellite-to-earth communications dictate more efficient usage of downlink bandwidth. Studies point to the adoption of packet telemetry on multi-instrument satellites with intelligent controllers. Interconnection requirements for spaceborne hardware based on distributed computing concepts imply a global interconnection means (common bus) with decentralized bus access control. A trade-off study of decentralized bus access control methods is presented in consideration of spaceborne fault-tolerance requirements. The proposed interconnection system is a high speed serial bus using a contention protocol classified as non-slotted, 1-persistant, listen-while-talk. A computer simulation of the contention protocol is applied to a specific near-earth satellite application for distributed control and data collection.
- Publication:
-
SOUTHEASTCON 1981; Proceedings of the Region 3 Conference and Exhibit
- Pub Date:
- 1981
- Bibcode:
- 1981ieee.conf..270C
- Keywords:
-
- Computerized Simulation;
- Data Acquisition;
- Data Links;
- Satellite Transmission;
- Spacecraft Communication;
- Spacecraft Control;
- Airborne/Spaceborne Computers;
- Architecture (Computers);
- Controllers;
- Spacecraft Instruments;
- Space Communications, Spacecraft Communications, Command and Tracking