What type of navigation system can use signals from multiple satellites for accuracy?

Satellite systems utilize signals from multiple satellites to determine an aircraft's precise location. This capability is primarily achieved through Global Navigation Satellite Systems (GNSS), such as the Global Positioning System (GPS). These systems work by triangulating positions based on signals received from at least four satellites in orbit, allowing for accurate three-dimensional positioning (latitude, longitude, and altitude).

Using multiple satellites enhances the system's accuracy and reliability since it can compensate for errors caused by atmospheric conditions, multipath effects, and other factors. This feature makes satellite navigation systems the preferred choice for aviation, providing critical data for navigation, flight planning, and even in certain automated systems.

Other navigation types, such as ground-based systems, rely on terrestrial signals and do not have the same level of accuracy or coverage as satellite systems. Radar navigation systems provide information on an aircraft's position relative to the ground and other aircraft but do not use satellite signals. Inertial systems depend on internal sensors and calculations, which can drift over time and are often less accurate without updates from external sources, such as satellites.