Guard Zones

Two automatic acquisition zones can be set in a sector or in any form. These zone act as suppression zones, avoiding unnecessary overloading to the processor and clutter by disabling automatic acquisition and tracking outside them. Targets in an automatic acquisition zone are shown with an inverse triangle. The operator can manually acquire important targets without restriction, an essential aid and source of information on assessing the situation.

Guard Zones generate visual and audible alarms when targets entered the operator-set zones. One of the Guard Zones can be used as an anchor watch to alert the operator when own ship or targets drift away from the set zone.

The target tracking symbol changes to a triangle when its predicted course violates the operator-set CPA/TCPA so that the operator may be notified of the approaching targets to the own ship for collision avoidance. The operator can readily change the vector lengths to evaluate the target movement trend.