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INSTRUMENTS

Explore the many instruments the European Space Agency use to observe the Earth. ESA offer data from a wide range of optical, radar, atmospheric, altimetric and gravimetric instrumentation.

a-positioning-navigation

LRR (Envisat)

The LRR instrument aboard Envisat was used to accurately determine the orbital height of the satellite.

a-positioning-navigation

DORIS

DORIS was used to determine the precise location of Envisat in orbit.

a-positioning-navigation

PRARE (ERS-2)

Precise Range And Range-Rate Equipment (PRARE) was a microwave tracking system for the measurement of satellite to ground range and range rate.

a-positioning-navigation

LRR (ERS-2)

An optical device for accurate satellite tracking from the ground to support instrument data evaluation

scatterometers

WS (ERS-2)

The ERS-2 Wind Scatterometer obtained information on wind speed and direction at the sea surface.

a-spectrometers-radiometers

MWR (ERS-2)

Used for measurement of the integrated atmospheric water vapour column & cloud liquid water content

a-altimeters

RA (ERS-2)

The RA on ERS-2 was a Ku-band nadir-pointing active microwave sensor designed to measure echoes from ocean and ice surfaces.

a-spectrometers-radiometers

SCIAMACHY

SCIAMACHY was an instrument aboard the Envisat satellite that measured atmospheric chemistry.

a-altimeters

RA-2

The RA-2 instrument aboard Envisat acquired radar altimetry data over ocean, land and ice surfaces.

a-spectrometers-radiometers

MWR (Envisat)

The MWR aboard Envisat measured integrated atmospheric water vapour column and cloud liquid water.