Radar/Chart Radar User Guide
Targets
65900010 10-5
AIS Targets
AIS Rendering Conditions
AIS targets are only rendered when the following conditions apply:
There is a valid position and heading for own ship
Enable Input
is checked in AIS Display
AIS target messages are being received and are valid.
The Sleeping Target filter setting is checked in AIS Display.
Own ship's position in WGS84
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datum is known.
When AIS targets are not being rendered, received AIS transmissions
continue to be stored so that known targets can be rendered quickly when
conditions indicate rendering should proceed.
For information on enabling AIS input and setting AIS filter settings,
including AIS objects, refer to AIS Display.
AIS Target States
AIS targets
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are usually displayed on the video circle as triangles (unless
the AIS is a scaled ship symbol) and may be shown in one of the following
states:
Sleeping
A sleeping target is slightly smaller in size
than an activated target and is not
displayed with heading line or vectors.
Activated
An activated target is displayed with
heading and speed/course vector. The
speed/course vector is a dashed line
originating from the centre of the triangle,
the length of line being proportional to the
vector time.
If heading data is missing or invalid the
course vector is shown in place of the
heading line.
If neither heading nor COG data is
available the triangle is oriented toward the
top of the display area.
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World Geodetic System 1984 (WGS-84) is a chart datum model used by chart makers to
map the earth’s surface.
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If the target has an AIS target associated with it and the AIS target has a name assigned,
this name will be used and may not be changed. Names assigned to targets will be distributed
across all nodes in the system.
Summary of Contents for VisionMaster FT
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