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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.

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  • Instrument - Positioning/Navigation

    Instrument - Positioning/Navigation

    PRARE

    The Precise Range And Range-Rate Equipment (PRARE) was a microwave tracking system on board the ERS-1 and ERS-2 missions.

  • Instrument - Imaging Radars, Scatterometers

    Instrument - Imaging Radars, Scatterometers

    SAR (ERS)

    The Synthetic Aperture Radar (SAR) instrument aboard ERS-1 and ERS-2 was capable of high precision change detection of surface heights.

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    MWR (ERS)

    The microwave radiometer (MWR) instrument on board the ERS-1 and ERS-2 missions provided measurements of the integrated atmospheric water vapour column and cloud liquid water content.

  • Instrument - Altimeters

    Instrument - Altimeters

    RA (ERS)

    The Radar Altimeter (RA) was a Ku-band (13.8 GHz) nadir-pointing active microwave sensor, on board ERS-1 and ERS-2 missions, designed to measure echoes from ocean and ice surfaces.

  • Instrument - Spectrometers

    Instrument - Spectrometers

    Vegetation (VGT)

    The main PROBA-V payload is the Vegetation sensor (VGT): a multispectral pushbroom spectrometer.

  • Instrument - Magnetic Field/Electric Field Instruments

    Instrument - Magnetic Field/Electric Field Instruments

    STR (Swarm)

    The Swarm Star Trackers retrieve information on the precise satellite orientation and attitude.

  • Instrument - Magnetic Field/Electric Field Instruments

    Instrument - Magnetic Field/Electric Field Instruments

    ACC (Swarm)

    The Accelerometer measures the Swarm satellite’s non-gravitational acceleration in its respective orbit.

  • Instrument - Magnetic Field/Electric Field Instruments

    Instrument - Magnetic Field/Electric Field Instruments

    GPSR and LRR (Swarm)

    Each Swarm satellite is equipped with a Laser Retroreflector for external calibration and validation of the on-board GPS receiver.

  • Instrument - Positioning/Navigation

    Instrument - 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.

  • Instrument - Positioning/Navigation

    Instrument - Positioning/Navigation

    PRARE (ERS-1)

    The Precise Range And Range-Rate Equipment (PRARE) was a microwave tracking system on board the ERS-1 mission.

  • Instrument - Positioning/Navigation

    Instrument - Positioning/Navigation

    SSTI

    SSTI was a state-of-the-art GPS receiver on GOCE that was designed to operate in a low-Earth orbit.

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    SCIAMACHY

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

  • Instrument - Altimeters

    Instrument - Altimeters

    RA-2

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

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    MWR (Envisat)

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

  • Instrument - Interferometers, Spectrometers/Radiometers

    Instrument - Interferometers, Spectrometers/Radiometers

    MIPAS

    MIPAS was an atmospheric instrument carried aboard the Envisat satellite.

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    MERIS

    The MERIS instrument aboard Envisat was primarily dedicated to providing ocean colour measurements.

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    GOMOS

    GOMOS is a medium resolution spectrometer covering the wavelength range from 250 nm to 950 nm.

  • Instrument - Magnetic/Motion Sensors

    Instrument - Magnetic/Motion Sensors

    EGG

    The main objective of GOCE's EGG was to measure the three components of the Gravity-Gradient Tensor.

  • Instrument - Imaging Radars

    Instrument - Imaging Radars

    ASAR

    ASAR ensures continuity with the image mode (SAR) and the wave mode of the ERS-1/2 AMI.

  • Instrument - Imaging Radars, Scatterometers

    Instrument - Imaging Radars, Scatterometers

    SAR (ERS-2)

    The SAR instrument aboard ERS-2 was capable of high precision change detection of surface heights.