ILS is a shortcut for 'Instrument Landing System'.
In the maritime context, the Instrument Landing System (ILS) is a navigation aid that is used to assist pilots in landing an aircraft at an airport. The ILS consists of a number of components, including a localizer, which provides lateral guidance to the pilot, and a glide slope, which provides vertical guidance to the pilot.
The ILS is designed to allow pilots to land an aircraft in conditions of low visibility, such as during fog or heavy rain. When an aircraft is approaching an airport and is within range of the ILS, the pilot can tune the aircraft's instruments to the ILS frequency and follow the guidance provided by the system to align the aircraft with the runway and make a smooth landing.
The ILS is used at many airports around the world, and is an important tool for ensuring the safety of aircraft operations in conditions of low visibility.
Overall, the Instrument Landing System (ILS) is a navigation aid that is used to assist pilots in landing an aircraft at an airport, particularly in conditions of low visibility. It consists of a localizer and a glide slope, and provides guidance to the pilot to align the aircraft with the runway and make a smooth landing. The ILS is used at many airports around the world and is an important tool for ensuring the safety of aircraft operations in conditions of low visibility.