How much more sensitive is the LOC compared to VOR?

The Localizer (LOC) is generally considered to be significantly more sensitive than the VHF Omnidirectional Range (VOR) system. The sensitivity of the LOC is about 4 times greater than that of the VOR. This heightened sensitivity allows the LOC to provide more precise lateral guidance to an aircraft during its approach phase, particularly in the context of Instrument Landing System (ILS) approaches.

The LOC operates on a narrower signal beam compared to the VOR, allowing it to pinpoint an aircraft's position more accurately as it approaches the runway. This is crucial for safe landings, particularly in low-visibility conditions. The enhanced resolution ensures that pilots can make finer adjustments to maintain the correct flight path, which is critical for ensuring alignment with the runway during landing.

In contrast, VOR signals are broader and provide more general navigational guidance. They are effective for en-route navigation and for providing direction to waypoints but lack the precision needed for final approach guidance. Hence, understanding this distinction helps to clarify why LOC sensitivity is rated as 4 times more than that of VOR.