Sea
clutter off
Sea
clutter in
auto
Interference
When two or more radar-equipped vessels are operating within
range of each other mutual radar interference can occur. This
usually appears as a spiral of small dots from the display centre
This type of interference is most noticeable at long ranges.
This interference can be suppressed using the interference
rejection settings. The images in the table below show how
the Interference rejection settings can clear up some of this
interference:
Interfer-
ence re-
jection off
Interfer-
ence re-
jection on
16.5 Radar display overview
With your radar scanner connected and the radar in transmit
mode, the radar picture provides a map-like representation of
the area in which the radar is operating.
D
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1
0
1
3
1
4
1
1
1
3
5
6
7
9
8
2
4
1
5
1
2
Item
Description
1
Range
2
On-screen controls (Touchscreen multifunction displays
only.)
3
Gain mode
4
Ship's Heading Marker (SHM)
5
Orientation
6
Guard Zone
7
Motion mode
8
Range status
9
Range ring spacing
10
Data cell overlay
11
Waypoint
12
Safe zone ring
13
Range out (Touchscreen multifunction displays only.)
14
Range in (Touchscreen multifunction displays only.)
15
Ship's position
Note:
On-screen range controls can be enabled and disabled
from the homescreen:
Customize > Display Preferences >
Range Controls
Additional functionality of the radar application includes:
• Color palettes.
• Adding AIS overlay.
• MARPA targets.
• VRM/EBL markers
Typically, your vessel’s position is at the center of the display,
and its dead ahead bearing is indicated by a vertical heading
line, known as the Ship’s Heading Marker (SHM).
Note:
If the cursor is placed over the SHM, the SHM will
temporarily be removed to help placing markers or acquiring
targets etc.
On-screen targets may be large, small, bright or faint, depending
on the size of the object, its orientation and surface. If using
a non-HD digital radome scanner, strongest target returns are
displayed in yellow with weaker returns in 2 shades of blue. If
using a HD or SuperHD radar scanner, stronger target returns
show as different colors from a range of 256 colors, providing
better clarity. Be aware that the size of a target on screen
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