What is the purpose of the Wide Area Augmentation System (WAAS)?

The Wide Area Augmentation System (WAAS) is designed specifically to improve the accuracy and integrity of Global Positioning System (GPS) signals. By utilizing a network of ground reference stations, WAAS continuously monitors GPS signals for any errors. It then computes corrections, which are transmitted back to users in the coverage area. This results in significantly enhanced positioning capabilities, allowing for precise navigation and landing of aircraft, especially in areas where conventional navigation aids may not be available.

Improving GPS accuracy means that pilots can rely on its signals for critical phases of flight, leading to safer and more efficient operations. Furthermore, integrity monitoring ensures that any faults in the GPS signals are identified and flagged, providing users with confidence that they are operating with reliable information. Thus, WAAS plays a pivotal role in modern aviation navigation by augmenting the standard GPS system for better performance and safety.