DVOR Stands for Doppler Very High Frequency Omni Range. DVOR is a standard International Civil Aviation Organisation (ICAO) ground based radio navigational aid that provides bearing information to aircraft to define air traffic control routes for en-route, terminal and instrument approach/departure procedures. DVOR when collocated with DME (Distance Measuring Instrument) provides both the angle and slant distance of aircraft with respect to ground station. 

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