JRC JMA-7110-6XA, Instruction Manual

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Trial manoeuvre A graphical simulation facility used to assist the operator to
perform a proposed maneuver for navigation and collision
avoidance purposes.
True course The direction of motion relative to ground or to sea, of a target
expressed as an angular displacement from north
True speed The speed of a target relative to ground, or to sea
True vector A vector representing the predicted true motion of a target, showing
course and speed with reference to the ground or sea
TT Target Tracking.
A computer process of observing the sequential changes in the
position of a radar target in order to establish its motion. Such a
target is a Tracked Target.
TTG
Time To Go.
Time to next waypoint.
TXRX Transmitter Receiver Unit
U
UTC Universal Time Coordinated.
The international standard of time, kept by atomic clocks around
the world.
V
VRM
Variable Range Marker
An adjustable range ring used to measure the distance to a target.
W
Waypoint A geographical location on a route indicating a event.