XVI
Relative course : The direction of motion of a target relative to own ship's
position expressed as an angular displacement from north. It
is deduced from a number of measurements of target range
and bearing on own ship's radar
Relative speed : The speed of a target relative to own ship's position. It is
deduced from a number of measurements of target range and
bearing on own ship's radar
Relative vector : The predicted movement of a target relative to own ship
Scan CORR : Target emphatic processing function.
Scanner : Antenna unit.
Sea stabilization : A mode of display whereby own ship and all targets are
referenced to the sea, using gyro heading and single axis log
water speed inputs
Target ENH : Target enhancing function.
TM (True Motion) : The combination of true course and true speed
TM display : A display across which own ship and each target moves with
its own true motion
VRM : Variable Range Marker
Trails : Tracks displayed by the radar echoes of targets in the form of
a synthetic afterglow. The trails may be either relative or true.
The true trails may be sea or ground stabilized
SOG : Speed over Ground
True bearing : The direction of a target from own ship or from another target
expressed as an angular displacement from north
True course : The true direction of motion of a target expressed as an angular
displacement from north. It is obtained by a vector
combination of target relative motion and own ship's true
motion
True speed : The speed of a target obtained by a vector combination of
target relative motion and own ship's true motion
True vector : The predicted true motion of a target as a result of own ship's
direction and speed input. The true vector may be either
displayed with reference to the water or to the ground
Performance monitor : Additional equipment for monitoring transmission power and
receiving sensitivity.
Floating EBL (Electric Bearing Line) : Electric bearing line centering a certain point.