|The Polder instrument is a camera composed of a two-dimensional CCD detector array, wide field of view telecentric optics and a rotating wheel carrying spectral and polarized filters.|
|Volume||0.8 x 0.5 x 0.25 m³|
|Power Consumption||50 W (image mode)|
|Data rate||883 kbps|
|Field of View||± 43° along track|
|± 51° cross track|
|Pixel (at nadir)||6 km x 7 km|
|Mission Lifetime||3 years|
Polder has 15 spectral bands which range from 443 nm to 910 nm. Two of these spectral bands are centered on molecular absorption bands: 763 (O2) and 910 (H2O).
|Approximate Band Width||20||20||20||20||20||10||40||20||40|
This table provides the spectral band characterisitcs for the POLDER instrument aboard the ADEOS-1 satellite. The 9 bands are defined by their central wavelength, spectral width and polarization capabilities. The saturation levels are given in unit of normalised radiance, I.e. the maximum spectral radiance divided by the solar spectral irradiance at nadir and multiplied by . The dynamic reflectance range is subsequently obtained by dividing the range given in this table by cos(), where is the solar zenith angle.
Polder instrumental response
In order to correct from absorption effects, spectral sensitivities of all Polder bands are given in the spectrum file for Polder 1 and Polder 2.