| EAP Phase Correction | |
The Elevation Antenna Patterns (EAPs) used by the
S-1 Instrument Processing Facility (IPF) are derived from the S-1
Antenna Model (AM) which is able to predict with great accuracy the
gain and phase patterns.
The EAP correction by the S-1 IPF was at launch only considering the
gain of the EAP. Similarly to what was done for ASAR. As an outcome of
the S-1A Commissioning Phase, it has been decided to upgrade the S-1
IPF to also correct for the EAP phase, in order to correct for the
induced phase difference between the polarimetric channels.
This correction has been introduced in March 2015 with the IPF V243.
Performing interferograms between products generated with the IPFV243
and the former version V236 leads to phase offset.
This operator performs EAP corrections for products generated before
March 2015 [1].
[1] Impact
of the EAP phase correction on phase preservation, Issue 1