BackForwardInstrument:  SAR-2000 S.G. 

Instrument details
Acronym SAR-2000 S.G.
Full name Synthetic Aperture Radar 2000 Secong Generation (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 Evolution of SAR-2000 on CSK-1, CSK-2, CSK-3 and CSK-4
Scanning Technique Side-looking, possible both to left- and right- end (alternatively) 20-50° off-nadir, swath 10 to 320 km, depending on operation mode - See table
Resolution < 1 to 35 m, depending on operation mode - See table
Coverage / Cycle Global coverage in 10 days for the largest swath mode (if used 50 % of the time). The constellation of two COSMO-SkyMed S.G. enables to address any selected target every 36 hours or less, for emergenc
Mass Power Data Rate

 

Providing Agency ASI
Instrument Maturity Backed by strong heritage
Utilization Period: ≥2019 to ≥2026
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 narrow swath

2x2 m

40 km

600 km, either right or left

HH or VV or HV or VH

Stripmap wide swath

4x4 m

60 km

600 km, either right or left

HH or VV or HV or VH

ScanSAR narrow swath

4x15 m

100 km

600 km, either right or left

HH or VV or HV or VH

ScanSAR wide swath

6x25 m

200 km

600 km, either right or left

HH or VV or HV or VH

ScanSAR huge swath

9x35 m

320 km

600 km, either right or left

HH or VV or HV or VH

Stripmap ping-pong

…… m

…… 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
Dominant wave direction3 - highInfrequent coverage.X-band SAR. Variable measured by spectral analysis of "imagettes"
Dominant wave period3 - highInfrequent coverage.X-band SAR. Variable measured by spectral analysis of "imagettes"
Fire fractional cover1 - primaryInfrequent coverage.X-band SAR. High resolution, for fire boundary detection
Fraction of vegetated land1 - primaryNo specific limitation.X-band SAR
Glacier cover1 - primaryLong time for mapping.X-band SAR for accurate boundary detection
Glacier motion3 - highInfrequent 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
Land cover2 - very highNo specific limitation.X-band SAR
Land surface topography2 - very highLong time for mapping.X-band SAR for interferometry between images taken at time intervals
Oil spill cover1 - primaryInfrequent coverage.X-band SAR
Sea-ice cover1 - primaryNo specific limitation.X-band SAR
Sea-ice elevation4 - fairNo specific limitation.X-band SAR. Sea ice elevation measured by interferometry
Sea-ice thickness5 - marginalChange detection only.X-band SAR. Sea ice elevation measured by interferometry. Thickness inferred by ice model
Sea-ice type3 - highNo specific limitation.X-band SAR. Type interpreted as age/roughness
Significant wave height5 - marginalHighly indirect.. Infrequent coverage.X-band SAR. Retrieved by spectral analysis of "imagettes". Boundary condition necessary for the retrieval
Snow cover3 - highThick snow only.. Infrequent coverage.X-band SAR
Snow status (wet/dry)3 - highThick snow only.. Infrequent coverage.X-band SAR
Snow water equivalent4 - fairChange detection only.. Infrequent coverage.X-band SAR. SWE is retrieved by grigging with data from ground networks
Soil moisture at surface5 - marginalStrongly affected by vegetation.. Infrequent coverage.X-band SAR
Soil type3 - highNo specific limitation.X-band SAR
Vegetation type3 - highNo specific limitation.X-band SAR
Wave directional energy frequency spectrum3 - highInfrequent coverage.X-band SAR. Variable measured by spectral analysis of "imagettes"