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ALOS (Daichi)

ALOS [NASDA]

ALOS (Advanced Land Observation Satellite) is used for cartography, regional observation, disaster monitoring, and resource surveying.

ALOS has three remote-sensing instruments:

  • the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) for digital elevation mapping with 2.5 meter resolution,
  • the Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2) for precise land coverage observation with 10 meter resolution, and
  • the Phased Array type L-band Synthetic Aperture Radar (PALSAR) for day-and-night and all-weather land observation.

ALOS transmitts its data via the DRTS (Kodama) satellite.

The ALOS was launched by an H-2A-2022 launch vehicle from the Tanegashima Space Center. ALOS as been given the nickname Daichi.

Five minutes after spacecraft separation, ALOS began to unfurl its 72-foot solar array that will provide electrical power to the craft throughout its mission. Six cameras are on-board to visually verify the correct deployment of the solar panel and various instrument antennas.

ALOS lost all power on 22. April 2011, thus ending the mission.

Nation: Japan
Type / Application: Earth Observation, Radar
Operator: NASDA
Contractors:
Equipment: PALSAR, PRISM, AVNIR-2
Configuration:
Propulsion:
Power: Deployable solar array (4 kW EoL), batteries
Lifetime: 3 years (design); 5 years (planned)
Mass:
Orbit: 697 km × 697 km, 98
Satellite COSPAR Date LS Launch Vehicle Remarks
ALOS (Daichi) 2006-002A 24.01.2006 Ta YLP-1 H-2A-2022
Further ALOS missions: