EO Sign In Authentication (Open)

1. Go to the Dissemination Service
2. Find the product you want via a map using the catalogue search
3. Register or log in to EO Sign In
4. Download (via HTTPS)

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 ASAR Wave Mode data is collection based and allows data browsing and download via treeview, filename or geographical catalogue search based on area of interest and metadata.

Data download is available via HTTPS, including bulk download functionality. ESA internal users can use their ESAAD account to access the HTTPS Dissemination Service.

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

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).

New users can register an account on EO Sign In. For further information about the EO Sign In Service you can visit TellUs.

Should you need support to access the data, please contact EOHelp.

This is the basic Level 1B ASAR Wave Mode product, including up to 400 single-look, complex, slant range, imagettes generated from Level 0 data and up to 400 imagette power spectra computed using the cross-spectra methodology.

The auxiliary parameters used are the most up-to-date at the time of processing. A minimum number of corrections and interpolations are performed in order to allow the end-user maximum freedom to derive higher level products. Complex output data is retained to avoid loss of information. Absolute calibration parameters, when available (depending on external calibration activities), are provided in the product annotations.

Imagette power spectrum is equivalent to the ERS UWA (Near Real Time) product with revisited algorithm (cross-spectra) taking into account the higher quality of the SLC imagette. Note that starting from an SLC imagette, the generation of an ERS UWA-type product might be ensured by a simple look detection and summation.

This product provides a continuation of the ERS SAR wave mode data.

The ASAR Wave products were processed operationally using the version of PF-ASAR available at the time of processing and are available in Envisat format.

Imagette Spatial Resolution: 20 m ground range x 20 m azimuth.

Cross Spectra Output: Wavelength range from 20 to 1000 m in 24 logarithmic steps.