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Instrument details
Acronym
IRS (SJ-9)
Full name
Infrared scanner
Purpose
High resolution land observation
Short description
Single channel TIR radiometer in the range 8-12 μm
Background
New development
Scanning Technique
Pushbroom, swath 18 km
Resolution
73 m at s.s.p.
Coverage / Cycle
Global coverage in 2.5 months
Mass
Power
Data Rate
Providing Agency
CAST
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
2013 to ≥2022
Last update:
2015-01-10
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
No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
Secondary mission objectives Fire temperature Sea surface temperature Opportunity objectives Cloud cover Cloud top temperature Show all Show fewer
Tentative 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
Variable Relevance for measuring this variable Operational limitations Explanation
Cloud cover 5 - marginal Infrequent coverage. TIR window channel(s) around 11 micrometers
Cloud top temperature 5 - marginal Infrequent coverage. TIR window channel(s) around 11 micrometers
Fire fractional cover 2 - very high Cloud sensitive.. Infrequent coverage. TIR window channel(s) around 11 micrometers
Fire radiative power 5 - marginal Cloud sensitive.. Infrequent coverage. TIR window channel(s) around 11 micrometers
Fire temperature 5 - marginal Cloud sensitive.. Infrequent coverage. TIR window channel(s) around 11 micrometers
Sea surface temperature 5 - marginal Cloud sensitive.. Infrequent coverage. TIR window channel(s)
Instrument: IRS (SJ-9)