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Polarization and Directionality of the Earth's Reflectance (POLDER)

NSSDCA ID: 1996-046A-05

Mission Name: ADEOS


The Polarization and Directionality of the Earth's Reflectance (POLDER) instrument is provided by the Laboratoire d'Etudes et de Rescherches en Teledetection Spatiale (LERTS)/Centre National D'etudes Spatiales (CNES) of France for the Japanese ADvanced Earth Observation Satellite (ADEOS). The objective of POLDER is to observe the Earth's radiation budget under different view angles and polarizations to study the optical and physical properties of clouds and the interactions of solar radiation with the Earth atmosphere system. POLDER is equipped with a wide angle objective taking two dimensional images at various wavelengths in the visible and near-infrared at different polarizations. The instrument will use a CCD matrix to take images at nadir at different view angles as the image moved along the orbit track. A rotating filter wheel and polarizers will produce measurements in eight spectral bands at three different polarization directions (0.435, 0.670, and 0.880 microns at 3 polarization directions and 0.49, 0.52, 0.565, 0.765, and 0.95 microns at no polarization). The POLDER will produce images in a swath width of 1440x1920 km at a ground resolution of 6x7 km.

Alternate Names


Facts in Brief

Mass: 33 kg
Power (avg): 40 W
Bit rate (avg): 900 kbps

Funding Agency

  • Centre National d'Etudes Spatiales (France)


  • Earth Science: Radiation Budget

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office



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