What technology does VOR utilize for navigation?

VOR, or VHF Omnidirectional Range, utilizes Very-High Frequency (VHF) radio signals for navigation. This technology works by transmitting a radio signal that allows pilots to determine their position and course relative to the VOR station. Specifically, VOR stations emit two types of signals: a reference signal that is transmitted in all directions and a variable signal that changes based on the angle at which it is received. By comparing the two signals, aircraft can determine their bearing from the station, enabling them to navigate along predefined airways or toward specific navigation points.

While other navigation technologies such as GPS and radar utilize different types of signals, the fundamental operation of VOR is based on VHF radio waves. This makes it a reliable source of navigation in both visual flight rules (VFR) and instrument flight rules (IFR) conditions.