VHF omnidirectional radio range
Quick Summary
VHF omnidirectional radio range (VOR) is a navigation system used in aviation. It operates in the very high frequency (VHF) range, making it less susceptible to atmospheric disturbances than older, lower-frequency systems.1
A VOR station transmits two signals simultaneously in all directions. The phase difference between these signals varies with the direction from the station. Aircraft equipped with special receivers can detect this phase difference and display it as a bearing, allowing pilots to determine their position relative to the station. When used with distance-measuring equipment (DME), VOR provides a fundamental point-to-point guidance system for aircraft.1
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