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Earth Topics (Applications)
  • Natural Disasters
  • Earthquake/Volcano

  • Solid Earth
  • Tectonics/Seismic Activity

    Instrument type
  • SAR
  • Mission
    Date of Launch:
    ERS-1 - 17 July 1991
    ERS-2 - 21 April 1995
    Mission Status:
    ERS-1 ended on March 2000 and ERS-2 September 2011 
    Orbit Height:
    782 to 785 km
    Orbit type:
    Near-circular, polar, Sun-synchronous
    Swath Width:
    5 km
    ERS-1/2 - SAR Level 1 Single Look Complex Image Product
    (6284) recent views
    Last update: 10 April 2017

    The SAR SLC product is a single look complex acquired in Image Mode. It is a digital image, with slant range and phase preserved, generated from raw SAR data using up-to-date auxiliary parameters. The products are intended for use in SAR quality assessment, calibration and interferometric applications. A minimum number of corrections and interpolations are performed on the data. Absolute calibration parameters (when available) are provided in the product annotation.

    Product characteristics
    Pixel size 8 m (range - across track) x 4 m (azimuth - along track – varying slightly depending on acquisition Pulse Repetition Frequency)
    Scene area 100 km (range) x at least 102.5 km (azimuth)
    Scene size 5000 samples (range) x at least 30000 lines (azimuth)
    Pixel depth 32 bits signed integer (16 bits I, 16 bits Q)
    Total product volume ~ 575 MB
    Projection Slant range
    Number of looks 1
    Data Set Specifications
    Spatial coverage: 82 N, 82 S, 180 W, 180 E
    Temporal coverage: 27-07-1991 - 04-07-2011
    Current Processor Version: PF-ERS / Envisat format
    Processing level
    Level 1
    How to access this data

    Data is available online after registration for the (A)SAR On The Fly Service.

    For more details see the news article from 11 April 2017

    Terms & Conditions applicable
    Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions
    Auxiliary data
    ERS-1 auxiliary data
    Available via SPPA
    ERS-2 auxiliary data
    Available via SPPA


    ERS SAR Envisat Format Product Specification


    ERS-1 SAR Sensor Performance, Products and Algorithms


    ERS-2 SAR Sensor Performance, Products and Algorithms


    Basic Envisat SAR Toolbox (BEST)


    Next ESA SAR Toolbox (NEST)


    Sentinel-1 Toolbox / Sentinel Application Platform (SNAP)


    Review of the impact of the ERS-2 Piloting Modes on the SAR Doppler Stability


    More SAR Documents

    Minimize From Delivery to Acquisition
    Minimize ESA Earth Observation Campaigns Data

    ESA has been involved in many Earth Observation campaigns over the past 25 years, from ground-based surveys, to ships at sea, aircraft and balloons in the atmosphere and the orbiting satellites in space.

    To learn more about these campaigns and available datasets from them, please see the Campaigns page.