parameter. The reference position is the location of the GPS antenna on the top of the antenna tower.
The
GPRI_tx_coord
,
GPRI_rx1_coord
, and
GPRI_rx2_coord
are the positions of the antenna phase
centers in the local tower coordinate system. The origin of the tower coordinates is the intersection of
the rotation axis and the central plane of the tower, 40 cm from the bottom mounting plate. The
GPRI_scan_heading
is the heading angle clockwise from north of the center azimuth line of the SLC
image.
