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    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
    (997) 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

    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.