Auto Remove Feature for MARPA Targets

The Auto Remove feature removes only lost targets. It only performs this when adding a new target and the track target list is at capacity. The lost target removed is replaced by a new target chosen arbitrarily. Lost targets are never removed by time or distance when Auto Remove is enabled.
A user would enable Auto Remove to allow auto acquire to continue to work as the vessel is near an area (or the ship is moving) with many other vessels entering and leaving the area. Having Auto Remove enabled in the scenario allows auto acquire to continually pick up new targets while dropping old lost targets (alternatively, it would fill up, and no new targets would be acquired as the old target becomes lost). Similarly, it helps with manual acquisition since the user can pick a new target, and it won’t pop a banner to alert that the target tracking list is full, where the user would have to remove a target first manually.