Manual

June 2004 Isis® Sonar User's Manual, Volume 2 151
Side-Scan
Enable
Side-Scan if you seek to capture non-topographic imagery.
You can choose
Side-Scan with or without also choosing
Bathymetry; they are not mutually exclusive. If you enable Side-
Scan
, you can also specify the port and starboard channels, as
explained in Port/Stbd channels.
Port/Stbd
channels
Prior to recording, Isis needs to know how your SeaBat is angled. The
SeaBat side-scan outputs three beams, all of which are operator-
selectable in side-scan mode. These beams correspond to port,
center, and starboard directions as seen from the perspective of the
SeaBat.
You use
Side-Scan in the SeaBat Setup dialog box to tell Isis which
way(s) your SeaBat is angled —
Off, Port, or Stbd.
Port/Stbd
channels
(continued)
If you intend to aim your SeaBat straight down (center beam
perpendicular to a flat ocean floor):
• Choose
Port for the SeaBat Port channel and Stbd for
the SeaBat Starboard channel.
If you intend to aim your SeaBat more to the port, (so that the
starboard beam of the SeaBat now points straight down):
• Choose
Off for the SeaBat Starboard channel (because
it points in the water column) and
Port for the SeaBat
Port channel. (The SeaBat’s center channel will also
be represented in Isis by this setting of
Port.)
If you intend to aim your SeaBat more to the starboard, (so that
the port beam of the SeaBat now points straight down):
• Choose
Off for the SeaBat Port channel and Stbd for
the SeaBat Starboard channel. (The SeaBat’s center
channel will also be represented in Isis by this setting
of
Stbd.)
Appendix I: Working with Specific Sonars