Which system provides navigation information along compass headings?

The Very High Frequency Omni-directional Range (VOR) system is specifically designed to provide aircraft with navigation information along compass headings. It works by transmitting a signal that allows pilots to determine their bearing relative to the VOR station, providing a means to navigate in a precise manner. The VOR system operates in the VHF spectrum, allowing pilots to receive this navigation information reliably even at high altitudes, within line of sight of the station.

By using a VOR, pilots can fly directly to or from the station or navigate along a specific radial, which is essential for planned flight routes and instrument approaches. The system is widely utilized within aviation, making it a staple for navigation in both instrument flight and general aviation.

In contrast, the other systems mentioned serve different purposes: the Ground Based Augmentation System (GBAS) enhances GPS signals for greater accuracy, while the Non-Directional Beacon (NDB) emits signals in all directions without a defined radial reference, and Distance Measuring Equipment (DME) provides information solely about the distance to the station rather than heading. This distinction reinforces why the VOR system is the correct choice for providing navigation along compass headings.