Buletin Geospatial Sektor Awam - Bil 1/2009 - Malaysia Geoportal

Sektor Awam-bil.1/2009Spesifikasi RazakSAT Secara Ringkas:-Bagi kanak-kanak yang menyertai lawatan tersebutdiadakan peraduan mewarna RazakSAT.SubsystemsAltitudeInclinationPayload (MAC)AttitudeDetermination &Control Subsystem(ADCS)Electrical PowerSubsystem (EPS)Command &Data HandlingSubsystem (C&DH)TelecommunicationSubsystem (TS)Payload DataManagementStructure &ThermalMission LifetimeSpecifications685 km9 °GSD : 2.5 m (PAN), 5 m (MS)Swathwidth : 20 km @ 685 kmThree-axis stabilization based on four(reaction wheels)Pointing Accuracy : < 0.2° (2 s)Pointing Knowledge : 1 arcmin (2 s)GaAs/Ge solar cells on honeycombsubstrateNiCd batteries (18 Ahr)Peak Power Tracking (PPT) & constantcurrent controlSolar Power : >300 W @ EOLTwo on-board computersTelemetry and command interfacemodulesAnalog Telemetry channels : up to 90Digital Telemetry channels : up to 1209,600 bit/s / 1,200 bit/s S-brand TT&Cuplink38.4 kbs / 9,600 bit/s / 1,200 bit/sS-brand TT&C downlink32 Gbit On-board solid-state memory30 Mbit/s X band payload data downlinkØ1,200 x 1,200 mm Hexagonal shapeMass : 180 kgModular structurePassive & Active thermal control> 3 YearsSumber : www.atsb.myAkhir sekali warga MaCGDI mengucapkan syabasdan terima kasih kepada ATSB kerana menjemputkami dan melihat sendiri sebahagian daripadakebanggaan Malaysia iaitu RazakSAT.Pusat Infrastruktur Data Geospatial Negara (MaCGDI)Kementerian Sumber Asli dan Alam Sekitar (NRE)E-mel : yaba@macgdi.gov.my26BuletinGEOSPATIAL