Tracker Autopilot; Roll Stabilization; Figure 15: Swath Under Zero Roll Conditions - Teledyne SeaBat T Series Operator's Manual

ACTIVE SONAR USAGE
When operating in harbor environments or over wrecks, where determination of least depth (or
distance to object) is critical, these sonar controls are designed to increase safety of survey missions.
The controls allow the surveyor to adjust detection sensitivity in order to detect weak reflecting objects
in the water column closest to the sonar head assembly in addition to the main seafloor detection.
The standard bottom detection is always generated, such that multiple detections are provided
in addition to, rather than instead of, the standard detection.
For instructions on how to adjust this setting, refer to the RESON Sonar UI User Manual (see
Appendix E Reference Documentation).

6.3.2 Tracker Autopilot

With "Tracker" enabled, all primary sonar control parameters such as range, power, gain, pulse
length, and swath width are set by the system based on the quality of data being collected.
Furthermore, Tracker will adjust the TVG settings of Absorption and Spreading to optimize the
quality of the outer beams, and open or close the swath angle accordingly; thereby ensuring that
maximum swath width is delivered with the highest quality result.
As there is a slight delay while tracker is being activated or deactivated, enabling/disabling the
feature should not be done in the middle of the survey line.
Once Tracker has been selected, no further operator input is required; however, user controls
makes it possible for the surveyor to limit the degree of automation:
 Constant Swath for the Tracker to maintain. This allows constant line spacing to be
planned independently of depth.
 Disable Tracker control of certain settings.
For instructions, refer to the RESON Sonar UI User Manual (see Appendix E Reference
Documentation).

6.3.3 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.
SeaBat T-Series Subsea Operator's Manual
Version 7
NOTE

Figure 15: Swath under Zero Roll Conditions

Page 43 January 31, 2019