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The scanner tilt mechanism automatically compensates for the pitch and roll of the
vessel caused by wave motion.
Motion Sensors and a tilting optics mechanism ensure that the scanning optics
remain at the correct level to see the scene.
Scanner Tilt Modes
The scanner can be operated in either of the following tilt modes:
•
Auto - When starting tracking, the scanner will automatically “sweep” through a
range of angles to determine the most stable scene for tracking purposes.
•
Manual - This mode is used to manually tilt the optics to point at the scene. For
example, when station-keeping close to a platform where the superstructure
is high up and the SceneScan beam must be tilted upwards. When starting
tracking, the scanner will initially use the currently selected angle. No “sweep”
will be performed. Manual Tilt can also be used to visually survey the scene
around the vessel without tracking.
Once a suitable tilt angle has been chosen tracking will start and the scanner tilt
angle will automatically adjust as the range to the asset changes. This is to ensure
that the same part of the scene is used throughout the tracking session.
When the Sensor is rebooted the tilt mode defaults to Auto.
The current tilt mode and leveller angle are displayed in the ‘Tilt Mode’ section of the
Side Bar.
To change the scanner tilt mode and leveller angle
1. Click on the Tilt button in the Side Bar.
2. Select the required mode and click on the Apply button to confirm.
3. Click on the +/- buttons to adjust the angle.
4. Click on the Apply button to confirm your changes.
Spirit Level
The Spirit Level control, on the left hand side of the
Tilt pane, displays the roll and pitch of the vessel
as measured by the Vertical Reference Unit within
SceneScan. The graphical display represents the roll
and pitch angles in the same manner as a bull’s eye
spirit level. The current values are displayed in text at
the bottom of the control. A ship outline is shown in
the background to indicate orientation relative to the
vessel.
3.2
Tracking Basics
3
Scanner Tilt Controls
Once the scanner starts tracking, it is not possible to change the tilt mode or leveller angle.
Sidebar Tilt Mode Selection
Tilt Mode Selection
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o
Scanner Tilt
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o
Scanner Tilt