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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 - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    ATSR

    The Along Track Scanning Radiometer (ATSR) on board ERS-1 and ERS-2 mission consisted of two instruments, an Infra-Red Radiometer and a Microwave Sounder.

  • 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 - Positioning/Navigation

    Instrument - Positioning/Navigation

    LRR ERS

    The Laser Retro-Reflector (LRR), on board the ERS-1 and ERS-2 missions, was an optical device for accurate satellite tracking from the ground to support instrument data evaluation.

  • 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 - Scatterometers

    Instrument - Scatterometers

    WS

    The Wind Scatterometer (WS) instrument, on board the ERS-1 and ERS-2 missions, obtained information on wind speed and direction over the sea surface.

  • 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/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.