BackForwardInstrument:  HRS 

Instrument details
Acronym HRS
Full name Haute Résolution Stéréoscopique
Purpose High-resolution land observation. Digital Elevation Model (DEM) by in-orbit stereoscopy
Short description Single VIS channel (0.51-0.73 µm), SNR = 120 @ 50 % albedo
Background Evolution of HRVIR flown on SPOT-4
Scanning Technique Pushbroom, 12000 pixel/line, swath 120 km ssp, along-track fore- and aft- pointing by ± 20°
Resolution 10 m s.s.p. cross-track, 5 m sampling along-track
Coverage / Cycle Global coverage in 26 days, in daylight
Mass 90 kg Power 128 W Data Rate

 

Providing Agency CNES
Instrument Maturity Flown on operational programme
Utilization Period: 2002 to 2015
Last update: 2022-08-08
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 optical radiometer or spectrometer
  • High resolution optical imager
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • Fire fractional cover
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
Note: * Primary mission objective.
VariableRelevance for measuring this variableOperational limitationsExplanation
Cloud cover5 - marginalInfrequent coverage.. Daylight only.Panchromatic channel
Fire fractional cover*2 - very highCloud sensitive.. Infrequent coverage.. Daylight only.Panchromatic channel with high resolution, for fire boundary detection
Glacier cover5 - marginalCloud sensitive.. Long time for mapping.. Daylight only.Panchromatic channel with high resolution, for glacier boundary detection
Glacier topography5 - marginalCloud sensitive.. Long time for mapping.. Daylight only.Panchromatic channel and along-track steering capability for stereoscopy between successive images along the orbit
Ice sheet topography5 - marginalCloud sensitive.. Long time for mapping.. Daylight only.Panchromatic channel and along-track steering capability for stereoscopy between successive images along the orbit
Land surface topography5 - marginalCloud sensitive.. Long time for mapping.. Daylight only.Panchromatic channel and along-track steering capability for stereoscopy between consecutive images along the orbit
Sea-ice cover5 - marginalCloud sensitive.. Daylight only.Panchromatic channel
Snow cover5 - marginalCloud sensitive.. Infrequent coverage.. Daylight only.Panchromatic channel