Which augmented system is primarily designed for improved satellite positioning?

The Wide Area Augmentation System (WAAS) is specifically designed to enhance the accuracy and reliability of satellite positioning systems, particularly the Global Positioning System (GPS). WAAS provides corrections to the GPS signals through a network of ground reference stations that monitor satellite signals for errors. These stations send correction information to geostationary satellites, which then broadcast the corrected data to users. This results in significantly improved horizontal and vertical accuracy, making WAAS especially beneficial for aviation navigation and other applications requiring precise positioning.

In contrast, while the Ground Based Augmentation System (GBAS) also improves satellite positioning, it operates on a much smaller scale, typically serving a limited area around specific airports. Other systems like VOR and Marker Beacons are not directly involved with satellite positioning and serve different purposes in aviation navigation.