Envisat ASAR WS L0 [ASA_WS__0P]

Envisat ASAR Wide Swath Mode 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 visit TellUS

Should you need support please contact EOHelp



The WS Mode Level 0 product consists of time-ordered AISPs collected while the instrument was is in Wide Swath Mode. The echo samples in the AISPs have been compressed to 4 bits/sample using FBAQ. This is a high-rate, wide swath (ScanSAR) mode so data is only acquired for partial orbit segments and is composed of data from five image swaths (SS1 to SS5). The Level 0 product is produced systematically for all data acquired within this mode.

The objective of this product is to offer Level 0 data for possible images processing on another processing site. It includes mandatory information for SAR processing.

Data Size: 400 km across track x 400 km along track



Digital Object Identifier (DOI):

Spatial coverage: 
90 N, -90 S, -180 W, 180 E
Temporal coverage:
2002-10-28 - 2012-04-08
Date of launch:
Mission status:
Orbit height:
800 km
Orbit type:
Swath width:
5 - 1150 km


level 0


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


blue arrow DATA CITATION

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


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
ASAR Product Handbook
User Manual
More ASAR Documents
Product Specifications
ASAR Software Tools
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