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Trails Motion Mode
There are two types of trails: relative motion trails and true motion trails.
Relative motion trails: The system plots the trails of a target at a position relative to the own ship.
The operator can easily judge whether the target is approaching the own
ship.
While the own ship is moving, the system also plots the trails of land and
other fixed targets.
True motion trails: The system plots the absolute motion trails of a target, irrespective of the
own ship’s position.
The operator can easily judge the course and speed of the target.
The system does not plot the trails of land and other fixed targets.
Trails modes provided with this system vary depending on the motion mode.
With true motion (TM) mode : Only the true motion trails mode is available.
With relative motion (RM) mode : The relative motion trails mode or true motion trails mode is
selectable.
RM(R) is indicated while the relative motion trails mode is
active.
RM(T) is indicated while the true motion trails mode is
active.
While the true motion trails mode is active, this system enables the continuous use of true motion
trails even if any of the following operations is performed:
• Motion display mode change (TM/RM)
• TM reset
• Bearing display mode change (AZI Mode)
• Center move (Off Center)
• Chart display on/off (Chart)
Note:
Accurate true bearing signals, speed signals and lat/long signals are necessary for using the true
motion trails mode.