BackForwardInstrument:  BGIS-2000 

Instrument details
Acronym BGIS-2000
Full name Ball Global Imaging System 2000
Purpose Very-high-resolution land imagery
Short description 5-channel VIS/NIR radiometer with one panchromatic channel and 4 multi-spectral [see detailed characteristics below]
Background New development
Scanning Technique Pushbroom, 27,000 detector array (PAN), 6,700 detector array (multispectral). Swath 16.5 km addressable by tilting the satellite in a variety of operating modes within a Field-of-Regard of 360 km. Along-track stereo capability.
Resolution 0.60 m (panchromatic), 2.4 m (multi-spectral)
Coverage / Cycle Global coverage in 6 months, in daylight; in few days (down to 7) by strategic pointing
Mass Power Data Rate 320 Mbps

 

Providing Agency DigitalGlobe
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2002 to 2015-01-27
Last update: 2017-03-28
Detailed characteristics
Central wavelength Spectral interval SNR @ specified albedo
N/A (PAN) 450 - 900 nm ……….. @ ……… % albedo
485 nm 450 - 520 nm ……….. @ ……… % albedo
560 nm 520 - 600 nm ……….. @ ……… % albedo
660 nm 630 - 690 nm ……….. @ ……… % albedo
830 nm 760 - 900 nm ……….. @ ……… % albedo
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 optical radiometer or spectrometer
  • High resolution optical imager
Mission objectives
Primary mission objectives
  • Biomass
  • Fraction of Absorbed PAR (FAPAR)
  • Fraction of vegetated land
  • Land cover
  • Leaf Area Index (LAI)
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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
Fraction of vegetated land2 - very highCloud sensitive.. Daylight only.VIS and NIR channels
Normalised Difference Vegetation Index (NDVI)2 - very highCloud sensitive.. Infrequent coverage.VIS and NIR channels
Aerosol volcanic ash5 - marginalCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR channels
Aerosol volcanic ash Total Column5 - marginalCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR channels
Sea-ice cover5 - marginalCloud sensitive.. Daylight only.VIS and NIR (for contour enhancement) channels
Cloud cover5 - marginalInfrequent coverage.. Daylight only.VIS and NIR channels
Cloud optical depth4 - fairLow-density cloud only.. Infrequent coverage.. Daylight only.VIS and NIR channels
Upward short-wave irradiance at TOA5 - marginalSpectral interpolation needed.. Information on BRDF needed.. Infrequent coverage.VIS and NIR channels
Short-wave cloud reflectance5 - marginalInfrequent coverage.VIS and NIR channels. Unsuitable dynamic range (saturation)
Earth surface albedo5 - marginalCloud sensitive.. Infrequent coverage.VIS channels
Photosynthetically Active Radiation (PAR)4 - fairCloud sensitive.. Infrequent coverage.VIS channels, range undersampled
Fraction of Absorbed PAR (FAPAR)4 - fairCloud sensitive.. Infrequent coverage.VIS channels including Red at 700 nm
Leaf Area Index (LAI)4 - fairCloud sensitive.. Daylight only.. Infrequent coverage.VIS and NIR channels. LAI inferred from NDVI
Vegetation type3 - highCloud sensitive.. Daylight only.VIS and NIR channels
Biomass5 - marginalCloud sensitive.. Index only.. Infrequent coverage.. Daylight only.VIS and NIR channels. Biomass inferred from NDVI
Soil moisture at surface5 - marginalCloud sensitive.. Index only.. Infrequent coverage.. Daylight only.VIS and NIR channels. Soil moisture inferred from differential brightness
Fire fractional cover2 - very highCloud sensitive.. Infrequent coverage.. Daylight only.Panchromatic channel with high resolution, for fire boundary detection
Snow cover4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS, NIR and panchromatic (higher resolution) channels
Soil type2 - very highCloud sensitive.. Daylight only.VIS and NIR channels
Land cover2 - very highCloud sensitive.. Daylight only.VIS and NIR channels
Glacier cover4 - fairCloud sensitive.. Long time for mapping.. Daylight only.VIS and NIR channels; and panchromatic channel with high resolution, for glacier boundary detection