ALOS Data Users Handbook

Section 4 Overview of ALOS Mission Operations- Data Node in charge of Asian Region : JAXA- Data Node in charge of European and African Region : ESA- Data Node in charge of North and South American Region : NOAA/ASF- Data Node in charge of Oceania Region : GA4.2 ALOS Mission Operation SystemsKa-band ReceivingStation (Hatoyama)X-band ReceivingStation (Hatoyama)Ka-band ReceivingStation (Tsukuba)X-bandSupportStationsX-bandForeignStationsTracking AndControl CenterData NodesInstitutional usersJAXA Internal UsersGeneral UsersData Recording SubsystemRaw dataLevel 0 dataNetworkData DistributionSubsystemALOS User InterfaceGateway (AUIG)Level 0dataMission ops dataAncillary dataAncillary DataServerDataset serverLevel 1 dataMMOSubsystemData ProcessingSystemMission ops dataProcessed data(Level 1 data)Data ArchiveL0 copy for deliveryCatalog RetrieveImage CatalogArchive/RetrieveOn-line distributionserverALOS User ServiceSubsystemCatalog serverProduct orderOutsideEOCInsideEOCData I/FOn-lineProduction ControlUser RequestserverData I/FOff-lineALOS Mission Operation SystemALOS Central Information SubsystemALOS Information SystemMission ops dataI/F On-lineFigure 4.2-1 ALOS Ground System Overview(1) Acquisition of Mission DataALOS mission data will be mainly acquired at the EOC Ka band ground station through DRTS via the DRCsystem. As a backup the TKSC Ka band ground station will receive the data.Mission data via the DT system will be received at the EOC X band ground station, X band support stations(when DRTS contingency), and foreign ground stations.(2) Generation/Distribution/Archiving of Level 0 Data SetReceived data at the EOC Ka band receiving subsystem and X band receiving subsystem will be demodulated,and then transmitted to the recording subsystem directly. Mission data will be depacketized and processed to4-4