BackForwardInstrument:  DREAM 

Instrument details
Acronym DREAM
Full name Dual-channel Radiometers for Earth and Atmosphere Monitoring
Purpose MW observation, particularly precipitable water
Short description Two-channel MW radiometer, 23.8 GHz with bandwidth 340 MHz, and 37 GHz with bandwidth 510 MHz, linear polarisation, radiometric accuracy 0.2 K
Background New development
Scanning Technique Nadir pointing
Resolution 52.5 km with satellite at perigee (300 km), 262 km with satellite at apogee (1500 km)
Coverage / Cycle Global in 1 month
Mass 15 kg Power 20 W Data Rate


Providing Agency KARI
Instrument Maturity
Utilization Period: 2009 to 2009-08-25
Last update: 2013-02-06
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 microwave radiometer
  • Cross-track, special or non-scanning microwave radiometer
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • Integrated Water Vapour (IWV)
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
Integrated Water Vapour (IWV)*4 - fairOver sea only.. Along-track only.MW channel(s) in the water vapour band around 23 GHz