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1、SpacecommunicationsprotocolSCPS/CCSDSResearchYeXiaoguo(NanjingUniversityofPostsandTelecommunicationsComputerScience,Nanjing,JiangsuProvince210003)Abstract:Withthecountriesintheexplorationofouterspaceresources,thedevelopmentanduseofspacecommunicationssystemsandt
2、heirinterconnectiontechnology.Researchanddevelopmentaremoreandmoreattention.SpaceDataSystemsAdvisoryCommittee(ofCCSDS)telemetry,remotecontrolandhighLevelintherailsystem(AOS)hasmadeaseriesofproposedstandards,includingtheTM/TC/theAOSSpaceDataLinkProtocol,spaceCom
3、municationsystemnetworkingprotocolsaswellasspacesystems,end-to-endapplicationprotocol.ThispaperanalyzestheCCSDSspacecommunicationssystem.Systemarchitecture,aswellastheSpaceCommunicationsProtocolStandards(SCPS)protocolsystemtoexploretheSCPS,/ofCCSDSSpaceCommunic
4、ations.Protocolfamilyconfigurationexamples,andconductedin-depthtechnicalanalysis.Keywords:forSpaceDataSystemsAdvisoryCommittee(ofCCSDS);SpaceCommunicationsProtocolStandards(SCPS);satellitenetwork;Inter-satellitelinks.IntroductionSpaceDataSystemsAdvisoryCommitte
5、e(ofCCSDS)referencetoopentheDepartmentofMarketingInterconnectionReferenceModel(OSI-RM),hierarchicalthinking,aSpacecommunicationsprotocolsuite[lforspacelinksorspacenetworkcommunications.Earlyinthespacecommunicationssystems,spacevehicle.Thetelemetrydataisbasedon
6、time-divisionmultiplexingwaythroughthefixed-lengthframes.Delivery,re-usespacelinkbycustomrules.Lackofrelevantinternational.Standards,eachspacevehicledatacommunicationsystemprojectcanonlybedeveloped.Customizedsystemfortheprojectindependently,poorreusability,R&Dw
7、eek.Alongperiod,aseriouswasteofmanpower,materialresources.Theearly1980s,CCSDSpackettelemetry(PacketTelemetry)protocol
8、21.Packettelemetrysystem,staronset.Equipmentandsubsystemdatasourcepacketdataunitthrough.Fixed-lengthtransmissionframe(TransferFrame)issuedinthe
9、spacelink.Send・Sourcepacketlengthvariable,compatibility,andthusthestandard.Spaceprojectsadopted.Sincethen,CCSDSpacketremoteControlProtocol(Telecommand)Eandadvancedstandardsi
