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POSN
POSitioN
PRF
Pulse Repetition Frequency
The number of radar pulses transmitted each second.
PROC
PROCess
Radar signal processing function
R
Radar beacon
A navigation aid which responds to the radar transmission by generating
a radar signal to identify its position and identity
Radar cross-section
Radar cross-section of a target determines the power density returned to
the radar for a particular power density incident on the target
Range Rings
A set of concentric circles labeled by distance from CCRP.
Reference target
A symbol indicating that the associated tracked stationary target is
used as a speed reference for the ground stabilization
Relative course
The direction of motion of a target relative to own ship motion
Relative speed
The speed of a target relative to own ship’s speed data
Relative vector
A predicted movement of a target relative to own ship’s motion
RM
Relative Motion
A display on which the position of own ship remains fixed, and all
targets move relative to own ship.
RM(R)
Relative Motion. Relative Trails.
RM(T)
Relative Motion. True Trails.
ROT
Rate Of Turn
Change of heading per time unit.
Route
A set of waypoints.
RR
Range Rings
S
SART
Search And Rescue Transponder
Radar transponder capable of operating in the 9GHz band
Sea stabilization
A display mode in which speed and course information are referred to
the sea.
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