Data Service Request (Restrained): Access to this data collection is provided only after submitting a service request through the ESA User Services Portal. Requests are reviewed and approved by ESA before access is granted, ensuring data is provided according to mission-specific conditions and service availability. 

Access Steps:

1. Create or log into your EO Sign In account.
2. Go to the ESA User Services Portal to complete and submit the form.
3. The request will be evaluated by ESA, which normally takes up to 2 weeks. 
4. Upon successful evaluation you will receive a confirmation email, which describes the amount of data to be provided, and details of how to download the data from the Dissemination Service.

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 tree view, filename, 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.

Envisat products can also be discovered through ESA's Exploring Earth service, which allows users to browse and download products among the available datasets from ESA and Third Party Missions and instruments, using various criteria (spatial, temporal). 

For information on the (A)SAR On-the-fly service please refer to the OTF User Manual.

Worldwide

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 per sample using FBAQ. This is a high-rate, wide swath (ScanSAR) mode so data is only acquired for partial orbit segments and is composed 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 image processing on another processing site. It includes mandatory information for SAR processing.

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