What does GNSS refer to in aviation?

GNSS stands for Global Navigation Satellite System, which is a collective term for satellite systems that provide geospatial positioning with global coverage. In aviation, GNSS is crucial as it offers accurate location information to aircraft. This system is essential for navigation, enabling pilots to determine their precise position in the airspace and on the ground. It enhances safety and efficiency by supporting various operations, including en-route navigation, approach, and landing.

The other choices do not accurately represent the established terminology used in aviation and satellite navigation fields. Global Navigation Software System and Global Network Satellite Service do not exist as formal systems in aviation, and Geostationary Navigation Support System is not the primary term used to describe satellite navigation systems. Thus, Global Navigation Satellite System is the correct and widely recognized terminology in this context.