NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Essential SpaceWire Hardware Capabilities for a Robust NetworkThe Geostationary Operational Environmental Satellite R-Series Program (GOES-R) mission is a joint program between National Oceanic & Atmospheric Administration (NOAA) and National Aeronautics & Space Administration (NASA) Goddard Space Flight Center (GSFC). GOES-R project selected SpaceWire as the best solution to satisfy the desire for simple and flexible instrument to spacecraft command and telemetry communications. GOES-R development and integration is complete and the observatory is scheduled for launch October 2016. The spacecraft design was required to support redundant SpaceWire links for each instrument side, as well as to route the fewest number of connections through a Slip Ring Assembly necessary to support Solar pointing instruments. The final design utilized two different router designs. The SpaceWire standard alone does not ensure the most practical or reliable network. On GOES-R a few key hardware capabilities were identified that merit serious consideration for future designs. Primarily these capabilities address persistent port stalls and the prevention of receive buffer overflows. Workarounds were necessary to overcome shortcomings that could be avoided in future designs if they utilize the capabilities, discussed in this paper, above and beyond the requirements of the SpaceWire standard.
Document ID
20160012696
Document Type
Conference Paper
Authors
Birmingham, Michael (ASRC Federal Space and Defense Greenbelt, MD, United States)
Krimchansky, Alexander (NASA Goddard Space Flight Center Greenbelt, MD United States)
Anderson, William (ASRC Federal Space and Defense Greenbelt, MD, United States)
Lombardi, Matthew (Lockheed Martin Corp. Denver, CO, United States)
Date Acquired
October 27, 2016
Publication Date
October 25, 2016
Subject Category
Space Communications, Spacecraft Communications, Command and Tracking
Report/Patent Number
GSFC-E-DAA-TN35120
Meeting Information
SpaceWire 2016 International Conference(Yokohama)
Funding Number(s)
CONTRACT_GRANT: NNJ06TA25C
CONTRACT_GRANT: NNG09HR00C
CONTRACT_GRANT: NNG13CR48C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
SpaceWire
Networks
Protocols

Available Downloads

NameType 20160012696.pdf STI