Reson SeaBat 8160, Operator'S Manual

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DEPTH GATES AND HEAD TILT
SeaBat 8160
Operator‟s Manual
Page 45 October 6, 2011
Version 5
APPENDIX A DEPTH GATES AND HEAD TILT
A.1 Introduction
O
n the “Filters” menu, the “Head Tilt” option is used to identify a known offset
resulting from a port or starboard tilt in the sonar array mounting configuration.
The entry of the “Head Tilt” value is required to guarantee that the depth gates
will work properly.
A.2 Depth Gates
The depth gates, with no input from a motion sensor, will be oriented parallel to
the horizontal plane of the sonar array, as shown by the Min and MaxDepth lines
in
Figure 19 . In this series of illustrations, the bottom detect dots are shown as a
horizontal line (“Line A" in
Figure 19 , Figure 20 , and Figure 21
or “Line B” in
Figure 22 and Figure 23 ) with dashed lines representing depth gates above and
below the bottom.
Sonar Head
MinDepth
MaxDepth
Line A
Figure 19: Depth Gates, No Roll
Figure 20 shows the same bottom image with a small roll value to port. Notice
that the ends of the swath have been cut off due to the action of the static (no
motion sensor applied) depth gates. In this figure and all remaining figures, the
bottom is flat.