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12
Targetless Tracking (Continued)
Tracking Overview
Start Tracking
Once Blanking Zones have been configured the operator can command the Sensor to start
tracking.
SceneScan Tracking is influenced by the operator’s choice of tilt mode (see the Scanner Tilt
Controls section on page 25 for further information):
•
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 desired part of the
scene. When starting tracking, the scanner will use the currently selected angle and no
“sweep” will be performed.
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.
Scene Reference Point
Once the Sensor has started tracking, it will start reporting its position relative to the Scene
Reference Point.
By default SceneScan will select the centre of the tracked scene for the scene reference
point, with a heading of 0°.
This behaviour should be sufficient for most users. However users are also able to edit the
Scene Reference Point, altering both its position and heading. This might be done to align
to the heading of a tracked vessel, or to position oneself against the edge of a platform or
quayside.
!
Warning: Changing the Scene Reference Point will disable the DP Feed. This is
done because altering the point can dramatically alter the output from the DP
Feeds. The DP Feeds must be re-enabled by following the below procedure.
Enabling DP Output
Once tracking, the Dashboard will display tracking and scene data, but the Sensor will not
output a DP feed. The reason for this is to allow the operator to review the detected scene,
and to set a Scene Reference Point of their choice before enabling DP Feed output.
When the operator is happy with the tracking data displayed on the Dashboard the DP
output can be enabled and the Sensor will start to report valid position telegrams to the DP
system.
Summary of Contents for 20-0253
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