BackForwardInstrument:  GLIMMER 

Instrument details
Acronym GLIMMER
Full name GLIMMER Imager
Purpose To observe the land surface during night-time.
Short description 4 channel imager with various calibration modes.
Background New development
Scanning Technique 300 km swath width
Resolution 10 m and RGB 40 m.
Coverage / Cycle Revisit the same spot after 11 days
Mass Power Data Rate

 

Providing Agency CAS
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2022 to 0
Last update: 2023-07-03
Detailed characteristics
Channel Wavelength (nm) Spatial Resolution (m)
1 444-910 10
2 424-526 40
3 505-612 40
4 615-894 40
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 with day/night capability [in SSO]]
Mission objectives
Primary mission objectives
  • Land cover
Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.
VariableRelevance for measuring this variableOperational limitationsExplanation
Cloud cover5 - marginalInfrequent coverage.. Daylight only.VIS channel(s)
Earth surface albedo5 - marginalCloud sensitive.. Infrequent coverage.VIS channels
Fire fractional cover2 - very highCloud sensitive.. Daylight only.VIS channels with high resolution for boundary detection
Fraction of Absorbed PAR (FAPAR)4 - fairCloud sensitive.. Infrequent coverage.VIS channels including Red at 700 nm
Glacier cover5 - marginalCloud sensitive.. Long time for mapping.. Daylight only.VIS and panchromatic channel with higher resolution, for glacier boundary detection
Photosynthetically Active Radiation (PAR)4 - fairCloud sensitive.. Infrequent coverage.VIS channels, range undersampled
Snow cover5 - marginalCloud sensitive.. Infrequent coverage.. Daylight only.VIS and panchromatic (higher resolution) channels
Sea-ice cover5 - marginalCloud sensitive.. Daylight only.VIS channel(s)