Trial Maneuvering In The Relative Vector Mode - JRC JMA-7133-SA Instruction Manual

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JMA-7100 Instruction Manual 5.OPERATION OF TARGET TRACKING AND AIS
5.7.2

Trial Maneuvering in the Relative Vector Mode

The result of Trial maneuvering in the Relative Vector mode is shown by a change
in target vector. In the Fig 5-8 below (in the same conditions as in the True Vector
mode in the previous page), it is seen that the acquired target is a dangerous one
because its vector is crossing the CPA RING.
NORMAL
TRIAL
The above Fig 5-8 shows that the relative vector of the target has changed as
shown in the figure as a result of simulation (course and speed), so that the
symbol color is changed into "White", a safe target.
Irrespective of the simulation results, the current CPA and TCPA values are shown
in the tracked target information just like when the true vector mode is active.
The course change of own ship is displayed as a dotted-line.
Better information is provided by using relative motion and sea stabilization.
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HL
HL
T
Fig 5-8:
Relative Vector Mode
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5.7 TRIAL MANEUVERING (Trial Maneuver)
Dangerous target
CPA Ring
Change of symbol
as a result of
trial maneuver
CPA Ring