Which approach provides satellite-based precision navigation guidance?

The GLS, or Ground-Based Augmentation System, provides satellite-based precision navigation guidance. It enhances the Global Navigation Satellite System (GNSS) signals, allowing for improved accuracy and reliability in navigation during approaches. GLS leverages satellite signals along with local augmentation data to ensure that aircraft can fly precise approaches and landings in various conditions.

While other options like GPS Approach and LPV (Localizer Performance with Vertical guidance) also utilize satellite systems for navigation, they might not offer the same level of precision and performance characteristics specifically associated with GLS. GPS approaches fundamentally depend on GNSS, while LPV approaches rely on WAAS (Wide Area Augmentation System) to enhance GPS accuracy, but they do not provide the comprehensive augmentation that GLS offers. The IWA Approach refers to an Integrated Wide Area system, which also does not specifically apply to the principles of precision navigation guidance covered by GLS.