User's Manual

Chapter 2 Radar Basic Operation MDC-5200/5500 Series
0093155002-03 2-18
Moving
Fixed
Own
ship
Moving
Land
Moving
Fixed
Own ship
Own ship
Land
34%
66%
Own ship position
relocatable area in TM
Center of display
For relative motion (RM) and true motion (TM)
Relative motion fixes your antenna position at the center of the display, and indicates the motion of
targets that surround your antenna position.
Your antenna position is displayed at the center. So, while the ship is moving, the fixed targets such as
the land also continue to move.
True motion indicates the motion of the target with respect to the specified bearing.
Fixed targets that do not move in any direction stay on the display, and all the moving targets move on
the display.
Note: The heading always continues to move. So, no true motion TM is available for H UP.
Relative motion (RM): The antenna position is fixed and the other surrounding targets move on the
display.
This is useful to monitor the surrounding situation with respect to own ship’s
position.
True motion (TM): The antenna position on the display moves according to its speed and tidal current.
Stationary targets are fixed on the display. This mode is useful to monitor your
position with respect to the fixed targets such as land.