earth online
  • Data
  • Envisat ASAR Wave SLC and Cros...

Envisat ASAR Wave SLC and Cross-Spectra Imagettes L1 [ASA_WVI_1P]

Envisat ASAR Wave Mode SLC Imagette and Imagette Cross-Spectra

How To Access Data

Fast Registration with Immediate Access (Open)

  1. Go to the ESA User Services Portal
  2. Register or log in to EO Sign In
  3. Submit the form for accessing the data
  4. You will receive an email with your user name
  5. A second email will follow with your password to download the data from the envwave-ftp-ds.eo.esa.int server via an FTP client (see Read More for connection details) or, alternatively, from command line using L-FTP.
Read More

The data can be downloaded via an FTP client (e.g., FileZilla or WinSCP) using the options "explicit FTP over TLS if available" or "Require explicit FTP over TLS".

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

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

Description

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.

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.

Details

DATA SET SPECIFICATIONS

Spatial coverage:
90 N, -90 S, -180 W, 180 E
Temporal coverage:
2002-10-30 - 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 1b

APPLICABLE TERMS & CONDITIONS

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

READ T&C

RESOURCES

Auxiliary Data

ASAR Auxiliary Data

Auxiliary Data

Visit page
Product Specifications

ASAR Products Specification - Revision C

Product Specifications

Download
Product Information

Envisat ASAR Sensor Performance, Products and Algorithms

Product Information

Visit page
Technical Note

Envisat ASAR Science and Applications

Technical Note

Download
User Manual

ASAR Product Handbook

User Manual

Download
Product Specifications

More ASAR Documents

Product Specifications

Visit page
ESA Earth Observation User Services Portal

Get Help?

ESA Earth Observation User Services Portal

Visit page
Tweet