BackForwardInstrument:  IRMSS-2 

Instrument details
Acronym IRMSS-2
Full name Infrared Multispectral Scanner - 2
Purpose Land observation for natural disasters monitoring
Short description 4-channnel VIS/SWIR/TIR radiometer [see detailed characteristics below]
Background Evolution of the IRMSS flown on CBERS 1 and 2
Scanning Technique Pushbroom. Swath 120 km
Resolution 40 m VIS and SWIR, 80 m TIR
Coverage / Cycle Global coverage in 26 days
Mass Power Data Rate 17 Mbps

 

Providing Agency CAST
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2013 to 2024
Last update: 2021-06-16
Detailed characteristics

Central wavelength

Spectral interval

SNR or NEΔT @ specified input

0.700 µm

0.50-0.9 µm

…… @ ….. % albedo

1.650 µm

1.55-1.75 µm

…… @ ….. % albedo

2.215 µm

2.08-2.35 µm

…… @ ….. % albedo

11.450 µm

10.4-12.5 µm

….. K @ …… K
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
  • High-resolution multi-spectral VIS/IR imagers
  • High-resolution multi-spectral VIS/IR imager
Mission objectives
Primary mission objectives
  • Fire fractional 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.TIR window channel(s) around 11 micrometers
Cloud top temperature5 - marginalInfrequent coverage.TIR window channel(s) around 11 micrometers
Fire fractional cover*1 - primaryCloud sensitive.. Infrequent coverage.VIS and TIR channels
Fire radiative power5 - marginalCloud sensitive.. Infrequent coverage.TIR window channel(s) around 11 micrometers
Fire temperature5 - marginalCloud sensitive.. Infrequent coverage.TIR window channel(s) around 11 micrometers
Glacier cover5 - marginalCloud sensitive.. Long time for mapping.. Daylight only.VIS channels
Leaf Area Index (LAI)5 - marginalCloud sensitive.. Daylight only.. Infrequent coverage.SWIR channel(s)
Sea surface temperature5 - marginalCloud sensitive.. Infrequent coverage.TIR window channel(s)
Snow cover5 - marginalCloud sensitive.. Infrequent coverage.. Daylight only.VIS channel(s)
Sea-ice cover5 - marginalCloud sensitive.. Daylight only.VIS channel(s)