Sea State
Set the Sea State control according to current sea conditions for best sea clutter rejection.
Target boost
(3G and 4G Broadband, and Pulse Radar only)
The target boost control increases pulse length or reduces radar bandwidth to make targets
appear larger in range and increase radar sensitivity.
Radar view options
View menu options vary depending on your radar antenna.
VelocityTrack
This option is available for radar antennas that have Doppler coloring functionality.
This is an unlock feature, refer to "Feature unlock" on page 15.
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Note: When VelocityTrack is enabled antenna rotation speed may be reduced.
Doppler coloring is a navigation aid to distinguish moving targets approaching or diverging
from your vessel. The radar indicates if a target is approaching or diverging from your vessel
when both these conditions are true:
• The target's relative speed is greater than the VelocityTrack speed threshold.
• The target is not geo-stationary (e.g. land or a marker buoy).
The following options are available:
• Off - turns off Doppler coloring
• Normal - approaching targets and diverging targets are colored.
• Approaching targets - only approaching targets are colored
The color of approaching and diverging targets depends on the palette used:
Radar image palettes
• Diverging targets are blue colored on all radar image palettes.
• Approaching target colors on radar image palettes:
-
Black/Red palette - Yellow
- White/Red palette - Yellow
- Black/Green palette - Red
- Black/Yellow palette - Red
Radar overlay palettes on charts
• Diverging targets are dark grey.
• Approaching targets are yellow.
VelocityTrack settings
Use this dialog to set speed thresholds of targets to be colored.
The speed threshold can be defined to apply for the radar source of the selected radar panel
only, or to all radar sources connected to the system. The setting is only applied to those
radars powered and connected at the time the setting is made. If the all radar sources option
is selected, newly connected radars will use the specified values automatically.
VelocityTrack examples
Approaching and diverging moving targets can be indicated as neutral (not colored) in some
circumstances. The navigator should be aware of these situations to safely use the
VelocityTrack feature as an aid for collision avoidance.
Examples of how VelocityTrack behaves in 2 navigation scenarios is illustrated below. The
illustrations show a target (A) crossing own vessel's (B) path.
Radar | NSO evo3 Operator Manual
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