The APT(Automatic Plotting Table) system is developed for drawing the continuous maneuver of target which is displayed on a PPI (Plan Position Indicator) of radar.
This system tracks the maneuver of target automatically on basis of the initial position of target which is designated by operator. For this object the tracking algorithm is described. To support the utility for Navy various software are developed. The maneuver of target obtained by this system is drawn on the plotter and the graphic display.