BackForwardInstrument:  CHRIS 

Instrument details
Acronym CHRIS
Full name Compact High Resolution Imaging Spectrometer
Purpose High-resolution land observation for detailed analysis of vegetation
Short description
  • VNIR spectrometer in the range 400-1050 nm with 63 channels at 36 m resolution or 18 channels at 18 m resolution. SNR: 200 @ 20 % albedo.
  • Instrument monitoring and calibration here
Background

New development
Scanning Technique

Pushbroom. Swath 14 km, addressable in the field of view within a Field-of-Regard of 540 km
Resolution IFOV: 36 m at full spectral resolution, or 18 m at reduced spectral resolution
Coverage / Cycle By strategic pointing, possible revisit of an area at 1 week intervals (orbital repeat cycle)
Mass 14 kg Power 8 W Data Rate 1 Mbps

 

Providing Agency UKSA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2001 to 2022
Last update: 2024-09-09
Detailed characteristics
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
  • Narrow-band or hyperspectral imagers
  • Hyperspectral imager (for vegetation)
Mission objectives
Primary mission objectives
  • Biomass
  • Fraction of Absorbed PAR (FAPAR)
  • Fraction of vegetated land
  • Leaf Area Index (LAI)
  • Normalised Difference Vegetation Index (NDVI)
  • Vegetation type
Evaluation of Measurements