Minimize Dataset Details
Earth Topics (Applications)
  • Land
  • Topography/Mapping

    Soil

    Vegetation

  • 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 source packets Level 0
    (ENVISAT.ASA.IM__0P)
    ENVISAT
    (632) recent views
    Last update: 2 August 2016

    The ASAR Image Mode source packets Level 0 data product offers Level 0 data for possible images processing on an other processing site. It includes some mandatory information for SAR processing.

    The Image Mode Level 0 product consists of time-ordered Annotated Instrument Source Packets (AISPs) collected while the instrument is in Image Mode. The echo samples contained in the AISPs are compressed to 4 bits/sample using Flexible Block Adaptive Quantisation (FBAQ). This is a high-rate, narrow swath mode so data is only acquired for partial orbit segments and may be from one of seven possible image swaths. The Level 0 product is produced systematically for all data acquired within this mode.

    This product provides a continuation of the ERS-SAR_RAW product.

    Data Size: 100 km x 12,000 km (for 30 min data take)

    Data Set Specifications
    Spatial coverage: 90 N, 90 S, 180 W, 180 E
    Temporal coverage: 2002-10-18 - 2012-04-08
    Processing level
    Level 0
    How to access this data

    Data is available via EOLI-SA upon submission of a Service Request 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

    Level 0 Instrument Source Packet Description

    HTML

    ASA_IM__0P File Structure

    PDF

    Envisat ASAR Science and Applications

    PDF

    Envisat ASAR Wave Mode Product Description and Reconstruction Procedure

    HTML

    ASAR Product Handbook

    PDF

    More ASAR Documents