Inertially Aided Scanning DME for Area Navigation

the design of an inertially aided radio navigation system using a scanning DME interrogator set is discussed, and flight test performance data of this area navigator and of the scanning DME subsystem are presented. Under poor geometric conditions and with 3°/sec turn maneuvers the 1–sigma position uncertainty is about 100 m. In an all–DME standby mode the maximum navigation error was less than 700 m. The navigation system is suitable for area navigation on parallel airlanes. Some operational problems are touched upon.