BackForwardInstrument:  WFI 

Instrument details
Acronym WFI
Full name Wide Field Imager
Purpose High-resolution land and vegetation observation
Short description 2 channels in VIS and NIR [see detailed characteristics below]
Background Consolidated technology
Scanning Technique Pushbroom. 3456 pixel/line, swath 890 km
Resolution 260 m
Coverage / Cycle Global coverage in 5 days
Mass 8 kg Power 8 W Data Rate 1.1 Mbps

 

Providing Agency CAST
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2000 to 2010
Last update: 2020-01-07
Detailed characteristics
Central wavelength Spectral interval SNR @ specified albedo
0.66 µm 0.63 - 0.69 µm 8 @ 2 % albedo
0.83 µm 0.77 - 0.89 µm 16 @ 4 % albedo
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Earth observation instrument
  • Passive optical radiometer or spectrometer
  • High resolution optical imager
WIGOS Subcomponents
  • Subcomponent 1
  • VIS/IR imagery; realisation of a Day/Night band [in SSO]
  • VIS/IR imager [in SSO]
Mission objectives
Primary mission objectives
  • Biomass
  • Fraction of vegetated land
  • Land cover
  • Leaf Area Index (LAI)
  • Normalised Difference Vegetation Index (NDVI)
  • Vegetation type
Evaluation of Measurements