A "Glide Slope" is a critical component of the instrument landing system (ILS) used in aviation. It provides vertical guidance to pilots during the approach and landing phases of flight. The glide slope helps ensure that an aircraft descends at the correct angle, typically around 3 degrees, to safely reach the runway. The glide slope is transmitted from a ground-based antenna located near the runway. Pilots use instruments in the cockpit to follow this guidance, which helps them maintain the proper altitude and descent rate. This system enhances safety, especially in low visibility conditions, by aiding pilots in making precise landings.