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Meteorological & Oceanographic Satellite Data Archival Centre
Space Applications Centre, ISRO
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  • INSAT-3A Payloads

    Communication Payload

    12 Normal C-band transponders (9 channels provide expanded coverage from Middle East to South East Asia with an EIRP of 38 dBW, 3 channels provide India coverage with an EIRP of 36 dBW and 6 Extended C-band transponders provide India coverage with an EIRP of 36 dBW).

    6 upper extended C-band transponders having India beam coverage providing an EoC-EIRP of 37 dBW.

    6 Ku-band transponders provide India coverage with EIRP of 48 dBW.

    Meteorological Payload

    A Very High Resolution Radiometer (VHRR) with imaging capacity in the visible (0.55-0.75 μm), thermal infrared (10.5-12.5 μm) and Water Vapour (5.7-7.1 μm) channels, provide 2x2 km, 8x8 km and 8x8 km ground resolutions respectively.

    A CCD camera provides 1x1 km ground resolution, in the visible (0.63-0.69 μm), near infrared (0.77-0.86 μm) and shortwave infrared (1.55-1.70 μm) bands.

    A Data Relay Transponder (DRT) having global receive coverage with a 400 MHz uplink and 4500 MHz downlink for relay of meteorological, hydrological and oceanographic data from unattended land and ocean-based automatic data collection-cum-transmission platforms.

    A Satellite Aided Search and Rescue (SAS&R) SARP payload having global receive coverage with 406 MHz uplink and 4500 MHz downlink with India coverage, for relay of signals from distress beacons in sea, air or land.

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