Local Area Augmentation System

The Local Area Augmentation System (LAAS) is an all-weather aircraft landing system based on real-time differential correction of the GPS signal. Local reference receivers Located around the airport send data to a central location at the airport . This data is used to formulate a correction message, which is then transmitted to users via a VHF Data Link . A receiver on an aircraft uses this information to correct GPS signals, which then provides a standard ILS -style display to use while flying a precision approach . The FAA has stopped using the term LAAS and has transitioned to the International Civil Aviation Organization(ICAO) terminology of Ground-Based Augmentation System (GBAS). [1] The FAA has indefinitely delayed plans for federal GBAS acquisition, the system can be purchased by air and non-Federal navigation aid. [2] Continue Reading “Local Area Augmentation System”