SeaBat Sonar UI - User Manual
Operation
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The roll and pitch stabilization is only available when it is defined in the
xml file of the sonar. It is possible that only the roll or pitch stabilization is
available in the hardware settings. This depends on the type of the sonar.
It is recommended that the motion sensor data update rate is at least
50Hz and preferably 100Hz. Baud rate and protocol details can be set in
the Motion Stabilization, but it should be ensured that the baud rate is
sufficient to allow the desired update rate. The motion sensor data for the
motion stabilization is read directly from the FPGA, so no port has to be
selected.
4.9.2.1 Roll Stabilization
Roll stabilization is an important feature related directly to system
efficiency which allows the swath width on the seafloor to be maximized,
thus increasing line spacing and reducing vessel time.
Under zero roll conditions, the swath is vertical and the center of the
swath is directly below the vessel.
Figure 4-58
Swath under zero roll conditions
When the vessel rolls the swath is rotated and the projected swath on the
seafloor is laterally displaced.
Figure 4-59
Laterally displaced swaths under roll conditions
This has the effect of reducing the usable swath width due to the
distortions on the edge.
