BackForwardInstrument:  SAR-2000 

Instrument details
Acronym SAR-2000
Full name Synthetic Aperture Radar 2000 (X-band)
Purpose High-resolution all-weather multi-purpose imager for ocean, land and ice
Short description X-band SAR, frequency 9.60 GHz, multi-polarisation and variable swath/resolution [see detailed characteristics below]
Background New development
Scanning Technique Side-looking, possible both to left- and right- end (alternatively) 20-50° off-nadir, swath 10 to 200 km, depending on operation mode - See table
Resolution 1 to 100 m, depending on operation mode - See table
Coverage / Cycle Global coverage in 2 weeks for the ‘huge swath’ mode (if used 50 % of the time).  The constellation of four COSMO-SkyMed enables to address any selected target every 12 hours or less, for emergencies
Mass 650 kg Power 1250 W Data Rate 300 Mbps

 

Providing Agency ASI
Instrument Maturity Flown on operational programme
Utilization Period: 2008-08-01 to ≥2018
Last update: 2012-09-12
Detailed characteristics
Operation mode Resolution Swath Field of regard Polarisation

Spotlight

1 m 10 km 600 km, either right or left HH or VV or HV or VH

Stripmap

3-15 m 40 km 600 km, either right or left HH or VV or HV or VH

ScanSAR wide swath

30 m 100 km 600 km, either right or left HH or VV or HV or VH

ScanSAR huge swath

100 m 200 km 600 km, either right or left HH or VV or HV or VH

Stripmap ping-pong

15 m 30 km 600 km, either right or left HH/HV + VV/VH
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
  • Active and radio-occultation sensor
  • Imaging radar (SAR)
Mission objectives
Primary mission objectives
  • Fraction of vegetated land
  • Glacier motion
  • Glacier topography
  • Land cover
  • Land surface topography
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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
VariableRelevance for measuring this variableOperational limitationsExplanation
Oil spill cover1 - primaryInfrequent coverage.X-band SAR
Sea-ice cover1 - primaryNo specific limitation.X-band SAR
Significant wave height3 - highHighly indirect.. Infrequent coverage.X-band SAR. Retrieved by spectral analysis of "imagettes". Boundary condition necessary for the retrieval
Dominant wave direction2 - very highInfrequent coverage.X-band SAR. Variable measured by spectral analysis of "imagettes"
Dominant wave period2 - very highInfrequent coverage.X-band SAR. Variable measured by spectral analysis of "imagettes"
Wave directional energy frequency spectrum2 - very highInfrequent coverage.X-band SAR. Variable measured by spectral analysis of "imagettes"
Sea-ice elevation4 - fairNo specific limitation.X-band SAR. Sea ice elevation measured by interferometry
Sea-ice thickness4 - fairChange detection only.X-band SAR. Sea ice elevation measured by interferometry. Thickness inferred by ice model
Sea-ice type2 - very highNo specific limitation.X-band SAR. Type interpreted as age/roughness
Vegetation type5 - marginalNo specific limitation.X-band SAR
Fraction of vegetated land3 - highNo specific limitation.X-band SAR
Soil moisture at surface3 - highStrongly affected by vegetation.. Infrequent coverage.X-band SAR
Fire fractional cover3 - highInfrequent coverage.X-band SAR. High resolution, for fire boundary detection
Snow status (wet/dry)4 - fairThick snow only.. Infrequent coverage.X-band SAR
Snow cover3 - highThick snow only.. Infrequent coverage.X-band SAR
Snow water equivalent3 - highChange detection only.. Infrequent coverage.X-band SAR. SWE is retrieved by grigging with data from ground networks
Soil type3 - highNo specific limitation.X-band SAR
Land cover3 - highNo specific limitation.X-band SAR
Land surface topography3 - highLong time for mapping.X-band SAR for interferometry between images taken at time intervals
Glacier cover2 - very highLong time for mapping.X-band SAR for accurate boundary detection
Glacier motion5 - marginalInfrequent coverage.X-band SAR for interferometry between images taken at time intervals
Glacier topography3 - highLong time for mapping.X-band SAR for interferometry between images taken at time intervals
Ice sheet topography3 - highLong time for mapping.X-band SAR for interferometry between images taken at time intervals