BackForwardInstrument:  ÑuSat-Imager 

Instrument details
Acronym ÑuSat-Imager
Full name ÑuSat-Imager
Purpose A high resolution imager of the land surface to cover a wide range of applications (e.g. agriculture and food production, monitoring for the oil and gas industry, cartography and urban planning, climate monitoring, resource management, disaster response, and infrastructure monitoring)
Short description An imaging system operating in the visible and near infrared spectrum, generating still imagery and video of Earth's surface at a ground resolution of up to one metre.
Background Commercial programme to provide frequently updated high resolution images of the land surface to customers.
Scanning Technique Push-broom scanning. Swath 5 - 150 km (see table below)
Resolution 1 - 90 metres depending on spectral sampling (see table)
Coverage / Cycle The operational 25-satellite constellation will achieve a 1.2-hour revisit time.
Mass Power Data Rate

 

Providing Agency Satellogic
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2016 to 2000
Last update: 2022-04-04
Detailed characteristics
Spectral Mode Panchromatic Multispectral Hyperspectral Thermal Infrared
Ground sampling 1m 1m 30m 90m
Swath 5km 5km 150km 92km
Spectral bands 400-900nm

400-690nm

400-510nm

510-580nm

580-690nm

750-900nm

400-900nm

up to 600 bands

5 nm FWHM

8-14 µm

0.01K resolution

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
  • Subcomponent 1
  • High-resolution multi-spectral VIS/IR imager
  • Subcomponent 4
  • High-resolution optical observation constellation (commercial)
Mission objectives
Primary mission objectives
  • Fire fractional cover
  • Fraction of vegetated land
  • Land cover
  • Normalised Difference Vegetation Index (NDVI)
  • Soil type
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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
Aerosol column burden4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels including the 760 nm band for high-level aerosol
Aerosol effective radius4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels including the 760 nm band for high-level aerosol
Aerosol mass mixing ratio4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels including the 760 nm band for high-level aerosol
Aerosol Optical Depth4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels including the 760 nm band for high-level aerosol
Aerosol type4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels including the 760 nm band for high-level aerosol
Biomass4 - fairCloud sensitive.. Index only.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels. Biomass inferred from NDVI and other vegetation indexes
Cloud cover4 - fairInfrequent coverage.. Daylight only.VIS and NIR hyperspectral channels
Cloud optical depth4 - fairLow-density cloud only.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral, channels
Cloud top height4 - fairInfrequent coverage.. Daylight only.NIR hyperspectral channels to estimate the total-column O2 above the cloud top as measured around 760 nm
Cloud top temperature5 - marginalInfrequent coverage.TIR window channel(s) around 11 micrometers
Cloud type5 - marginalInfrequent coverage.. Daylight only.VIS and NIR hyperspectral channels
Downward short-wave irradiance at Earth surface4 - fairCloud sensitive.. Highly indirect.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels
Earth surface albedo4 - fairCloud sensitive.. Infrequent coverage.VIS hyperspectral channels
Fire fractional cover1 - primaryCloud sensitive.. Infrequent coverage.VIS and TIR channels
Fire radiative power5 - marginalCloud sensitive.. Infrequent coverage.TIR window channel(s) around 11 micrometers
Fire temperature5 - marginalCloud sensitive.. Infrequent coverage.TIR window channel(s) around 11 micrometers
Fraction of Absorbed PAR (FAPAR)3 - highHigh troposphere only.. Cloud sensitive.. Infrequent coverage.VIS channels including Red at 700 nm
Fraction of vegetated land2 - very highCloud sensitive.. Daylight only.VIS and NIR hyperspectral 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
Land cover2 - very highCloud sensitive.. Daylight only.VIS and NIR hyperspectral channels
Leaf Area Index (LAI)3 - highCloud sensitive.. Daylight only.. Infrequent coverage.VIS and NIR hyperspectral channels. LAI inferred from NDVI and other vegetation indexes
Normalised Difference Vegetation Index (NDVI)1 - primaryCloud sensitive.. Infrequent coverage.VIS and NIR hyperspectral channels
Oil spill cover4 - fairCloud sensitive.. Daylight only.. Infrequent coverage.VIS hyperspectral channels
Photosynthetically Active Radiation (PAR)3 - highCloud sensitive.. Infrequent coverage.VIS channels, range accurately sampled
Sea surface temperature5 - marginalCloud sensitive.. Infrequent coverage.TIR window channel(s)
Short-wave cloud reflectance5 - marginalInfrequent coverage.VIS and NIR channels. Unsuitable dynamic range (saturation)
Snow cover4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS, NIR and panchromatic (higher resolution) channels
Soil moisture at surface4 - fairCloud sensitive.. Index only.. Infrequent coverage.VIS and TIR window channels. Soil moisture inferred from thermal inertia
Soil type2 - very highCloud sensitive.. Daylight only.VIS and NIR hyperspectral channels
Specific humidity4 - fairCloud sensitive.. Very coarse vertical resolution.. Infrequent coverage.. Daylight only.NIR hyperspectral channels including the ro-sigma-tau band of water vapour around 940 nm
Upward short-wave irradiance at TOA5 - marginalSpectral interpolation needed.. Information on BRDF needed.. Infrequent coverage.VIS and NIR hyperspectral channels
Vegetation type2 - very highCloud sensitive.. Daylight only.VIS and NIR hyperspectral channels
Aerosol volcanic ash4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels including the 760 nm band for high-level ash
Aerosol volcanic ash Total Column4 - fairCloud sensitive.. Infrequent coverage.. Daylight only.VIS and NIR hyperspectral channels including the 760 nm band for high-level ash
Integrated Water Vapour (IWV)5 - marginalCloud sensitive.. Infrequent coverage.. Daylight only.NIR hyperspectral channels covering the 940 nm band