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Instrument details
Acronym
MIRAS
Full name
Microwave Imaging Radiometer using Aperture Synthesis
Purpose
Ocean salinity, soil moisture
Short description
Frequency: 1.413 GHz with synthetic-aperture antenna. Several polarimetric modes.
Background
New development
Scanning Technique
Pushbroom. Correlation interferometry is implemented among receiver arrays deployed on the three arms of an “Y” shaped antenna. A swath of 1000 km is implemented
Resolution
50 km basic, to be degraded depending on the desired accuracy for salinity measurements
Coverage / Cycle
Global coverage in 3 days (soil moisture). Average over more weeks is needed depending on the desired accuracy for salinity measurements
Mass
355 kg
Power
511 W
Data Rate
89 kbps
Providing Agency
ESA
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
2010-02-21 to ≥2025
Last update:
2021-06-17
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
Subcomponent 1 Low-frequency MW imager
Mission objectives
Primary mission objectives Sea surface salinity Soil moisture (in the roots region) Soil moisture at surface 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
Instrument: MIRAS