1. OPERATIONAL OVERVIEW
1-61
1.37 Target Trails
The trails of the radar echoes of targets can be displayed in the form of synthetic af-
terglow. Target trails are shown either relative or true and can be sea or ground stabi-
lized. True motion trails require a compass signal, and position and speed data. When
the range is changed, trails are continued for targets which were already displayed in
the previous range. Newly detected targets have no trail when first detected.
1.37.1 True or relative trails
You can display echo trails in true or relative motion. Relative trails show relative
movements between targets and own ship. True motion trails present true target
movements in accordance with their over-the-ground speeds and courses.
Note: The indication in the [TRAIL MODE] box changes color based on the trail mode
and orientation, as shown in the following table.
The reference for the past position displays for AIS and TT is also switched whenever
the trail reference is switched.
1. Open the menu.
2. Select [1 ECHO].
3. Select [0 NEXT].
4. Select [4 TRAILS]. The [TRAILS] menu appears.
Note: You can also right-click the [TRAIL] box to access this menu.
Trail mode Orientation Color
True trails
(TRUE-G or TRUE-S)
HEAD UP (relative) Yellow
STERN UP (relative)
CURSOR GYRO (relative) White
COURSE UP (relative)
NORTH UP (relative)
True target trails - Stationary
targets are not smeared.
Relative target trails - Targets move relative
to own ship, stationary targets are smeared.
[
TRAIL
]
box
Trail time
Trail mode indication
Right-click the
[
TRAIL box
]
to show
the
[
TRAILS
]
menu.
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