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

Envisat ASAR Wave Mode SLC Imagette and Imagette Cross-Spectra

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  1. Go to the ESA User Services Portal
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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.



Spatial coverage:
90 N, -90 S, -180 W, 180 E
Temporal coverage:
2002-10-30 - 2012-04-08
Date of launch:
Mission status:
Orbit height:
800 km
Orbit type:
Swath width:
5 - 1150 km


Level 1b


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



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