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Earth Topics (Applications)
  • Land
  • Topography/Mapping

    Soil

    Vegetation

  • Snow and Ice
  • Sea Ice

    Snow and Ice

  • Natural Disasters
  • Oil Slick

  • Ocean and Coast
  • Ocean Currents and Topography

    Ocean Waves

    Coastal Geomorphology

  • Solid Earth
  • Tectonics/Seismic Activity

  • Water
  • Water Management

    Instrument type
    Instrument
    Mission
    Operators:
    ESA
    Date of Launch:
    1 March 2002
    Mission Status:
    Out of service since May 2012 
    Orbit Height:
    800 km 
    Orbit type:
    Sun-synchronous 
    Swath Width:
    5 - 1150 km
    EOLI-SA availability
    ASAR Image Mode Single Look Complex
    (ENVISAT.ASA.IMS_1P)
    ENVISAT
    (1110) recent views
    Last update: 2 August 2016

    This data product represents a single-look, complex, slant-range, digital image generated from Level 0 ASAR data collected when the instrument is in image mode. Seven possible swaths in HH or VV polarisation are available. The product is primarily intended for use in SAR quality assessment and calibration, and can be used to derive higher level products.

    The spatial coverage is about 100 km along track per 56- 100 km across track, and the radiometric resolution is 1 look in azimuth, 1 look in range. The file size is 741 Mbytes. It is worth highlighting that Azimuth pixel spacing depends on Earth-Satellite relative velocity and actual PRF and slant range pixel spacing is given by ASAR sampling frequency (19.208 Mhz).

    Auxiliary data include: Orbit state vector, Time correlation parameters, Main Processing parameters ADS, Doppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, Geolocation Grid ADS, SQ ADS.

    Spatial Resolution: approximately 8m slant range x approximately 4m azimuth

    Data Set Specifications
    Spatial coverage: 90 N, 90 S, 180 W, 180 E
    Temporal coverage: 2002-10-18 - 2012-04-08
    Processing level
    Level 1b
    How to access this data

    Data is available via EOLI-SA upon registration for the (A)SAR On The Fly Service.

    For information on access and use of the On-The-Fly service please refer to the OTF FAQ page and news of 28 July 2016.

    Terms & Conditions applicable
    Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions
    Auxiliary data
    ASAR auxiliary data
    Available via SPPA
    Resources

    PDF

    ASAR Products Specification - Revision C

    HTML

    ASAR Product Handbook

    HTML

    ASAR Level 1B Algorithms

    HTML

    ASA_IMS_1P File Structure

    HTML

    More ASAR Documents