Using triangulation software, the Radio Direction Finder (RDF) system recently deployed throughout MUAC’s international airspace (the upper airspace of Belgium, the Netherlands, Luxembourg and north-west Germany) accurately calculates an aircraft’s position on the basis of its radio transmissions.
In densely occupied airspace in which up to 25 aircraft are being controlled at any one time in one sector, RDF helps controllers quickly locate which aircraft are transmitting on the frequency. The transmitting aircraft appear clearly on the controllers’ integrated human machine interface. This feature helps reduce call sign confusion, read-backs from wrong aircraft or crossed transmissions.