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ASAR Image Mode source packets Level 0
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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
How to access this data
Terms & Conditions applicable
Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions
ASAR Products Specification - Revision C
Level 0 Instrument Source Packet Description
ASA_IM__0P File Structure
Envisat ASAR Science and Applications
Envisat ASAR Wave Mode Product Description and Reconstruction Procedure
ASAR Product Handbook
More ASAR Documents
How to access EO data
From Delivery to Acquisition
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.