What is a true statement about the Wide Area Augmentation System (WAAS)?

The Wide Area Augmentation System (WAAS) is designed to improve the accuracy and reliability of GPS signals for aviation and other applications. Its primary function is to provide real-time corrections to GPS signals, which enhances positional accuracy significantly—typically to within one to two meters. This enhancement is achieved through a network of ground stations that monitor GPS signals and transmit corrected data to geostationary satellites, which then relay this information back to the users.

By employing WAAS, pilots are able to receive more precise lateral and vertical guidance, which is crucial for various aviation operations including precision approaches. This increased accuracy is particularly beneficial in challenging flying conditions.