BackForwardInstrument:  HotSat Imager 

Instrument details
Acronym HotSat Imager
Full name HotSat Imager
Purpose To monitor the Earth's surface at high spatial resolution in the mid-wave infrared.
Short description Mid-wave infrared detector with a sensitivity of less than 2 degC.
Background A new development
Scanning Technique
Resolution 3.5 m
Coverage / Cycle Has the capability to record a 60 s video of an area.
Mass Power Data Rate

 

Providing Agency SSTL
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2023 to 2023
Last update: 2023-10-09
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 4
  • High-resolution optical observation constellation (commercial)
  • High-resolution optical observation constellation (commercial)
Mission objectives
Primary mission objectives
  • Fire fractional cover
  • Fire radiative power
  • Fire temperature
  • Land surface temperature
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
Fire fractional cover*2 - very highInfrequent coverage.. Cloud sensitive.. Daylight only.MWIR window channel(s) around 3.7 micrometers
Fire radiative power*3 - highCloud sensitive.. Infrequent coverage.MWIR window channel(s) around 3.7 micrometers
Fire temperature*3 - highCloud sensitive.. Infrequent coverage.MWIR window channel(s) around 3.7 micrometers
Land surface temperature*4 - fairCloud sensitive.. Infrequent coverage.. Affected by sunlight.MWIR window channel(s) around 3.7 micrometers (high sensitivity to high temperature, cloud impact reduction)
Sea surface temperature4 - fairCloud sensitive.. Infrequent coverage.. Affected by sunlight.MWIR window channel(s) (cloud impact reduction)