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), is 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, 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