Simrad R2009 User Manual

Blind sectors
Funnels, masts or other obstructions (when located near the radar antenna) may cause blind
or shadow sectors, where the target visibility may be completely lost or strongly reduced.
Targets remaining in these sectors for long time (more than 10 antenna revolutions) will be
considered lost, and the lost target alert will be triggered.
Low signal to noise ratio and signal to clutter ratio
In situations where the signal to noise or the signal to clutter ratio of the radar echoes is low
(small vessels in heavy sea or rain clutter, or big vessels close to the radar horizon), target
detection is poor and the tracking will not detect the target at each antenna revolution. This
will cause errors in the tracking, and it can range from missed information and up to
complete loss of the target when it is missed for 10 consecutive antenna revolutions.
AIS targets
If a compatible AIS receiver is connected to the radar system, any targets detected by these
devices can be displayed and tracked. You can set alarms to notify you if an AIS target gets
too close or if the target is lost.
The system can display up to 20 AIS targets. An alert is triggered if the number of AIS targets
exceeds 95% of the maximum system limitation.
By default, all AIS targets are shown on the panel if an AIS device is connected to the system
and the AIS function turned ON. You can select to filter AIS targets as described in "AIS target
filtering" on page 28.
The AIS function is available when:
• AIS data is available through the serial line
• Gyro compass heading is available. If gyro heading is lost the AIS function is automatically
switched OFF
• EPFS valid position is available
AIS target symbols
The following icons are used for AIS targets in the system:
Symbol Description
AIS target with heading line, SOG/COG (dotted line) and passed
track.
AIS target with heading line and SOG/COG (dotted line), and with
indicated turn direction.
Selected AIS target, indicated with a square (dotted line) around
the target symbol.
Dangerous AIS target indicated with bold line and with red
color.The symbol flashes until the target alarm is acknowledged by
the operator.
Real ATON (Aids To Navigation)
Lost AIS target, indicated with crossed lines centered on the target
symbol. The symbol is located at the last received position from the
target.
¼
Note: A symbol is drawn with a dotted line if the collision avoidance cannot be
calculated.
Target tracking | R2009/R3016 User manual
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Simrad R2009 Specifications

General

Brand	Simrad
Model	R2009
Category	Marine GPS System
Language	English