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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 (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

    LRR (ERS-2)

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

  • Instrument - Scatterometers

    Instrument - Scatterometers

    WS (ERS-2)

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

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    MWR (ERS-2)

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

  • Instrument - Altimeters

    Instrument - 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.

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    GOME

    GOME is a nadir-scanning ultraviolet & visible spectrometer for global monitoring of atmospheric Ozone

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    ATSR-2

    Used for measuring sea-surface temperatures, cloud-top temperatures and vegetation monitoring.

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    ATSR-1

    ATSR-1 instrument was used for measuring sea-surface temperatures and cloud-top temperatures and vegetation monitoring.

  • 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.

  • Instrument - Altimeters

    Instrument - Altimeters

    SIRAL

    SIRAL (SAR Interferometer Radar Altimeter) is the primary instrument onboard ESA's CryoSat mission.