Local Area Augmentation System

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Link Semantic Value
Term Local Area Augmentation System
Status


Mandatory for


Contexts


Categories
Synonyms


Related entries

Wide Area Augmentation System (WAAS)

Broader term

ground-based augmentation system(GBAS)

Narrower term


Abbreviation

LAAS

Definition

an augmentation to GPS that focuses its service on the airport area (approximately a 20-30 mile radius).

Definition Source

FAA (2009) homepage, Navigation Services, URL: http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/hill/index.cfm#waas

Note

Systems such as LAAS are known as ground-based augmentation systems (GBAS). LAAS broadcasts its correction message via a very high frequency (VHF) radio data link from a ground-based transmitter. LAAS will yield the extremely high accuracy, availability, and integrity necessary for Category I, II, and III precision approaches, and will provide the ability for more flexible, curved approach paths. LAAS demonstrated accuracy is less than 1 meter in both the horizontal and vertical axis.