Design Of Spaceborne Network For SpaceWire

The SpaceWire bus standard dedicates the handling of payload data and controllinginformation on board, it is intended to meet the needs of high capability, high rate datatransmission in the future, and provides a unitive infrastructure for connecting sensors, dataprocessing units, MSF,TM subsystems and EGSE.This page takes the needs to SpaceWire bus as the background. Combing with the needto the capability of high-speed data processing, system reliability and security in pre-studyingitems and CCSDS SOIS standard model, the paper holds the research on network topologyand fault tolerant technigue of SpaceWire, and ensures that high-speed data bus can work withhigh reliability and flexible configuration in space. The main contribute of the paper is asfollows:Based on fully investigate of the development of SpaceWire, combing with the need tohigh-speed serial data bus for spacecraft synthesis electronical system, this paper raises anetwork scheme and topology model based on SpaceWire bus, introduces SpaceWire busstandard and fault tolerant technology in detail, and expatiates the process of SpaceWire buscontroller the SpaceWire router; the different mechanisms of Router design are contrasted;based on the CCSDS SOIS layers, the paper gives SpaceWire bus system architecture andlayer model, and introduces the layer definition and services content; at last, multilayerredundance SpaceWire bus network connection model is given and validated viademonstration system.