Envisat ASAR IM L0 [ASA_IM__0P]

Envisat ASAR Image Mode source packets Level 0

How to Access Data

Data is available on the ESA Online Dissemination System upon Request Evaluation

The process usually takes up to two weeks and there are no deadlines for submitting a service request.

The products are available for download via the following interfaces:

  • ESA EO Multimission Catalogue (EO CAT) : Allows users to discover and search products among the available datasets from ESA and Third Party Missions and instruments, using various criteria (spatial, temporal, specific).
  • ESA ERS and Envisat (A)SAR dedicated Online Dissemination Service:The ESA (A)SAR On-the-fly (OTF) data processing and dissemination service allows end-users to gain direct access to the (A)SAR archive from the ERS-1, ERS-2 and Envisat Missions. The data is collection based and allows data browse and download through the treeview as well as via geographical catalogue search based on area of interest and metadata. Interferometric search option is available for relevant collections. Data download is available via HTTPS, including bulk download functionality.

For information on the (A)SAR On-The-Fly service please refer to the OTF FAQ page

For further information about the EO Sign In Service you can visit TellUs

Should you need support please contact EOHelp

 

Description

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 by the instrument 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.

Details

DATA SET SPECIFICATIONS

Digital Object Identifier (DOI):

Spatial coverage: 
90 N, -90 S, -180 W, 180 E
Temporal coverage:
2002-10-18 - 2012-04-08
Date of launch:
2002-03-01
Operators:
ESA
Mission status:
completed
Orbit height:
800 km
Orbit type:
Sun-synchronous
Swath width:
5 - 1150 km

PROCESSING LEVEL

level 0

APPLICABLE TERMS & CONDITIONS

Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions

READ T&C

blue arrow DATA CITATION

European Space Agency, 2016, Envisat ASAR Image Mode L0 Product. IPF version 6.03.

RESOURCES

ASAR auxiliary data
Auxiliary Data
ASAR Products Specification - Revision C
Product Specifications
Envisat ASAR Sensor Performance, Products and Algorithms
Product Information
Envisat ASAR Science and Applications
Technical Note
More ASAR Documents
Product Specifications
ASAR Product Handbook
User Manual
ASAR Software Tools
Tools
Get Help?
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