Raytheon NSC 18 User Manual page 76

D PAST POSITION
Adjustable between
OFF and 60 min. (interval)
3748DOC020102
Operator Manual
In addition to their symbol, all acquired targets can be given a history track.
With the PAST POSITION function switched on, a past position point is set at
the target symbol's position (see Figure: 2−30).
The interval between two past positions can be adjusted.
Past positions indicate the last completed maneuver of the acquired
targets. In absolute (TRUE) view, it is possible to differentiate between
changes of course and changes of speed.
Past position
Target
Vector
Figure: 2−30 Past position information
Last course change High speed
2−58
Low speed
Display
Past position dot
Information
about past motion
characteristics
Edition: 14.JAN.2005