Chinese Space Science and Technology ›› 2017, Vol. 37 ›› Issue (1): 75-81.doi: 10.16708/j.cnki.1000-758X.2017.0014
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LI Shi-You, CHEN Li-Hu*, CHEN Xiao-Qian
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Abstract: Thetimeinformationevaluatedfromthemessageoftheautomaticidentifyingsystem(AIS)isofmostimportanceinmonitoringandcontrollingoftheglobalvessels.Aimingatcontinuouslymonitoringsomeparticularvessels,thetimeinformationintheAISmessagesoftheAISsystemsonboardboththeTianTuo-1(TT1)andTianTuo-3(TT3)micro-nano-satelliteswasstudied.Firstly,astatisticalanalysiswasperformedbyemployingtheAISdatareceivedbytheTianTuo-1nano-satelliteduringitsonorbitoperation.TheresultssuggestthatitisimpossibletoobtainthetimeinformationmerelybytheAISmessageitself.Secondly,thecompositionandformatoftheAISmessagereceivedbytheTT3-AISwasstudied.IntheTT3-AISsystem,atimeflagwasgeneratedeveryminutetobeinsertedintothereceivedAISdatapackage.ThustheTT3-AIShasagoodfunctiononaddingthetimeinformationtotheAISmessages,whichwillbehelpfulformonitoringandcontrollingoftheglobalvessels.
Key words: TianTuo-1nano-satellite, TianTuo-3micro-nano-satellite, space-basedAIS, SOTDMA, time-flag
LI Shi-You, CHEN Li-Hu, CHEN Xiao-Qian. DecodinganalysisoftimeinformationfromspacebasedAISmessage[J]. Chinese Space Science and Technology, 2017, 37(1): 75-81.
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URL: https://journal26.magtechjournal.com/kjkxjs/EN/10.16708/j.cnki.1000-758X.2017.0014
https://journal26.magtechjournal.com/kjkxjs/EN/Y2017/V37/I1/75