Local Area Augmentation System (LAAS) 2
Local Area Augmentation System (LAAS) 2 : US and (Canada) The augmentation to global positioning system (GPS) to meet precision approach CAT I, CAT II and CAT III accuracy, integrity, continuity and availability requirements. The system comprises a ground reference station at an airport, a VHF data-link signal in space and user avionics. See also: Wide Area Augmentation System (WAAS)