Abstract:
This is a stand-alone multi-look, ground range, narrow swath digital image
generated using the SPECAN 2.6.1.2.4. algorithm and the most up to date
auxiliary information available at the time of processing. Engineering
corrections and relative calibration (antenna elevation gain, range spreading
loss) are applied to
... compensate for well-understood sources of system
variability. Generation of this product uses a technique to allow half the
looks of an image to be acquired in horizontal polarisation and the other half
in vertical polarisation and processed to 30-m resolution (with the exception
of IS1). Absolute calibration parameters, when available (depending on external
calibration activities), shall be provided in the product annotations.
More Information:
http://earth.esa.int/
[Summary Extracted from the Envisat Product Handbook] 
