Earth Observation Satellites

EARTH OBSERVIATIONSATELLITES

Earth observation satellites are satellites specifically designed to observe Earth from orbit.

Earth-observation satellites help us monitor and protect our environment, manage our resources

Uses:1. Environmental monitoring

2. Meteorology

3. Mapping of terrain

ASTER•Advanced Spaceborne Thermal Emission And Reflection Radiometer•Government of Japan and NASA •One of the 5 payloads on the Terra Satellite

Terra (EOS AM-1)

ASTER

Uses:Cloud cover

Glaciers

Land Temperature

Sea ice

Snow cover

Launch Date:18 , December1999

705km

98.8min

16 days VNIR(visibleNearInfrared)

SWIR(shortwaveInfrared)

TIR(ThermalInfrared)

3

6

5

15x15m

30x30m

90x90m

8 bit

8 bit

12 bit

60km

60km

60km

± 8.55°

± 8.55°

± 24°

Name Altitude Orbital Temporal Sensor # of Spatial Quant- Swath off period Res. Bands Res. Titization nadir

Visible and Near infrared Short wave infrared

Thermal infrared

ASTER IMAGES

False color image of a volcanic eruption and the direction of flow of ash

Landsat-8•NASA and USGS•The most recent satellite added to the landsat program

Name Altitude Orbital Temporal Sensor # of Spatial Quant- Swath off period Res. Bands Res. Titization nadirLandsat-8

Uses:Oceano-graph

Aerosols

VegetationTypes

Thermal Mapping

BiomassContent

Cloud Cover

Launch date:Feb 11,2013

705km

99min

16 days OLI(Operati-onalLandImager)Push broom

TIR(ThermalInfrared)Push broom

9

2

30x30mM.S

15x15mpan

90x90mTI

12 bit

12 bit

185km

185km

± 15°

± 15°

Shrinkage of the Araj Sea from 1977-2010 due to diversion of water for agricultural use.

SPOT-5•Satellite Pour L’observation de la terre•CNESNational Center for Space studies,French Space Agency

Name Altitude Orbital Temporal Sensor # of Spatial Quant- Swath off period Res. Bands Res. Titization nadirSPOT-5

Uses:Environment-alAssessment

Agriculture

MarineStudies

Launch date:May 3,2002

822km

101.4min

26 days HGR(HighResolutionGeometricInstrument)

4 10x10mM.S

20x20MIR

5x5mpan

8 bit 60km

± 27°

Landsat-7• NASA and USGS•Seventh satellite of the Landsat program

Name Altitude Orbital Temporal Sensor # of Spatial Quant- Swath off period Res. Bands Res. Titization nadirLandsat-7

Uses:Oceano-graph

VegetationTypes

Mineral Deposit Identification

Launch date:April 15,1999

705km

99min

16 days ETM+(Enhanch-edThematicMapper)Whisk broom

8 30x30mM.S

60x60mthermal

15x15mpan

8 bit 183km

No off nadirView-ing

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