BackForwardInstrument:  RLSBO 

Instrument details
Acronym RLSBO
Full name Side Looking Real Aperture Radar
Purpose Sea-ice monitoring
Short description Real aperture antenna, X-band frequency (9.7 GHz)
Background
Scanning Technique Side-looking, basic swath 455 km, offset 250 km from nadir. On Okean-O-1 there are two parallel swaths leaving a 500-km gap in between, along the sub-track. On SICH-1M the swath may be stretched to 700 km
Resolution 1.8 km average
Coverage / Cycle Global in 3 days (1.5 days for Okean-O-1)
Mass Power Data Rate

 

Providing Agency Roscosmos
Instrument Maturity Flown on operational programme
Utilization Period: 1986 to 2006-04-15
Last update: 2012-09-12
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
  • 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
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