Evolution of SAR Satellite for Agriculture Applications - APRSAF

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4. SAR Sensor HardwareOverview of ALOS-2 SAR Sensor• ALOS-2(Advanced Land Observing Satellite-2) is a successorof earth observation satellite “Daichi” (ALOS).• ALOS-2 has L-band synthetic aperture radar (SAR) system,based on Active Phased Array Antenna (APAA) technology.Data Relay SatelliteCommunication AntennaL-band SAR Antenna©JAXADirect Transmission Antenna“Development of Active Phased Array Antenna for ALOS-2”, 2011 Thailand-Japan MicroWave(TJMW2011),2011, Takehito IGUCHI, Yuji OSAWA and et al.16
4. SAR Sensor HardwareALOS-2 SAR Sensor Characteristics• ALOS-2 has improved performance compared with PALSAR of ALOS.ResolutionSwathItemSpecificationBasic Observation Mode 3mWide Area Observation Mode 100mHigh Resolution Mode 1-3mBasic Observation Mode 50kmWide Area Observation Mode 350kmHigh Resolution Mode 25kmFrequencyL-band(1.2GHz)Data Amount240M-1Gbps(after compression)observation duty average observation duty: >30%Pointingright-and-left lookingPolarizationSingle / Dual / Quad(Full) polarimetry17
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Evolution of SAR Satellite for Agriculture Applications - APRSAF

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